Buy-and-build strategies are routinely described in the language of optionality. Platform acquisitions are framed as entry points, add-ons as growth options, and sequencing as a way of preserving flexibility. The vocabulary suggests a natural fit with real options theory, the body of work that values investments for the choices they keep open.
Looked at closely, a tension appears. Real options theory offers a compelling way to value investments under uncertainty, but it is far less clear that it explains, or guides, the organisational reality of buy-and-build as it is actually executed. This note examines that tension. The narrow question is whether real options is an operative mechanism in buy-and-build or primarily a retrospective valuation and sensemaking lens that overstates managerial flexibility.
My argument is that real options theory helps explain how acquisitions can create contingent growth opportunities, but that it systematically overstates the degree of reversibility, discretion, and modularity available to a platform running a serial-acquisition strategy. In practice, buy-and-build outcomes align more closely with the resource-based view, developed in the first note of this Notebook, than with real options logic. I hold that as a proposition to be tested, not a settled finding, because the evidence on how sponsors actually decide is still thin.
The promise of real options
Real options theory emerged to address a known weakness of traditional capital budgeting. Net present value treats an investment as a now-or-never commitment, discounting expected cash flows under a fixed plan, and it performs poorly under uncertainty, learning, and staged commitment. Myers (1977) coined the real options framing, observing that many corporate assets, growth opportunities especially, behave like call options whose value depends on discretionary future investment. Dixit and Pindyck (1994) and Trigeorgis (1996) developed the canonical treatments.
The core insight is that investments embed managerial flexibility. A firm may defer, expand, abandon, or stage an investment as uncertainty resolves, so the investment confers the right but not the obligation to act later. Strategy scholars carried the logic into resource allocation, arguing that firms invest to keep options open and that flexibility has economic value static NPV misses (Bowman & Hurry, 1993). On its face, buy-and-build fits: a platform creates follow-on acquisition opportunities, minority stakes preserve expansion options, and sequential deals resemble compound options.
Where real options enters the buy-and-build literature
The most direct application to buy-and-build treats serial acquisitions as compound option games, in which a platform acquisition creates options on future deals, competitive dynamics shape option value, and positioning affects the value of waiting versus acting (Kogut, 1991; Smit & Trigeorgis, 2004; Smit & Moraitis, 2010). Later work extends the framework to the cognitive biases that distort acquisition decisions, arguing that an options frame can help managers price overconfidence and escalation more accurately (Smit & Lovallo, 2014).
This work is theoretically sophisticated and internally coherent, and it deserves a fair hearing rather than a straw-man dismissal. Crucially, the option-games literature does not assume costless reversibility; it incorporates competition, commitment, and path dependence, which is exactly why it is the strongest version of the optionality case. It also states its own scope condition: real options models are most useful when managers explicitly recognise and manage investments as options. That qualification is where theory and practice begin to diverge.
The operating reality of buy-and-build
In execution, buy-and-build exhibits three structural features that strain the assumptions even a sophisticated options account leans on.
First, organisational commitments are hard to reverse. Options logic values the ability to abandon or defer at low cost. Once an acquisition closes, leadership attention is reallocated, systems are integrated, reporting lines change, and cultural expectations shift, and those changes create organisational sunk costs that are not recoverable even when financial capital might be. Abandonment is available in theory and rare in practice, especially once several integrations overlap.
Second, options interact through shared capacity. Options models often treat options as separable. In a platform, acquisitions compete for the same executive attention, integration capacity, and governance bandwidth, so exercising one affects the value and feasibility of the others. That interdependence is the cumulative-load dynamic of the absorptive-capacity note, and it is hard to represent as a portfolio of independent options.
Third, flexibility falls as scale rises. Successful early add-ons, the ones that validate the thesis, often reduce future flexibility rather than increase it. As the platform grows, the cost of reversing course rises, the organisation becomes less modular, and discretion narrows. That is the opposite of the simple options intuition, and it is the heart of the boundary critique that a sequential stream of investment does not, by itself, constitute a real option (Adner & Levinthal, 2004).
Real options as valuation logic versus operating mechanism
These features point to a distinction worth holding onto. As a valuation logic, real options can articulate why an early investment justifies a premium when future growth paths are plausible but uncertain. As an operating mechanism, it rarely governs how buy-and-build is actually run. Acquisition decisions in practice rely on narratives of fit and adjacency, resource complementarities, governance and integration-capacity constraints, and heuristic thresholds, far more than on option lattices. Formal option valuations, binomial trees and compound-option models, seldom sit at the centre of a board’s decision beyond illustrative analysis. The lens describes a logic of value; it does not describe the machine.
Where the two lenses diverge
The tension with the resource-based view runs deeper than method, because the two rest on different assumptions about how value is created. The resource-based view assumes resources are heterogeneous, capabilities are embedded and path-dependent (Dierickx & Cool, 1989; Barney, 1991), and value is created through accumulation and recombination. Real options assumes decisions can be staged cleanly, flexibility is retained over time, and investments can be abandoned without system-level disruption. In buy-and-build settings the resource-based assumptions dominate observed outcomes: capabilities accumulate unevenly, integration debt compounds, and early decisions shape later feasibility. Acquisitions look less like options than like irreversible resource commitments whose value depends on future recombination capacity.
When real options does add value
The critique narrows the framework rather than discarding it. Real options is most useful in buy-and-build where investments are genuinely staged, as with minority stakes or joint ventures, where exit or expansion rights are contractually explicit, where integration is deliberately limited, and where the platform stays structurally modular. Those conditions are more common at the edges of a strategy than at its core. The compound-option account is most defensible when acquisitions retain genuine separability, which serial roll-ups, by design, tend to lose.
A worked illustration: the option that became a commitment
Picture a platform that takes a minority stake in a regional supplier, structured deliberately as an option: a contractual right to acquire the rest within three years, with the supplier left to run independently in the meantime. On a real-options view this is textbook, a staged investment that preserves the right to expand and the right to walk.
Within a year the logic erodes. The platform, wanting the procurement synergy that justified the stake, begins integrating purchasing and back-office systems before exercising the call, because waiting leaves value on the table. The supplier’s owner, now dependent on the platform’s systems, can no longer be cleanly separated, and the platform’s own operations have been reorganised around the combination. When the three-year mark arrives, the option to walk is nominal: the businesses are entangled, the sunk organisational costs are real, and not exercising would be more disruptive than exercising. The option was genuine at signing and a commitment in practice long before it was formally exercised. The reversibility the structure promised was consumed by the integration the synergy required.
The objection: option-games already model this
The strongest objection comes from the option-games tradition itself: it already incorporates competition, commitment, and irreversibility, so the critique attacks a cruder version of the theory than its best proponents hold. This is fair, and worth conceding. The sophisticated models can represent partial irreversibility and interaction. The disagreement is not really about whether the mathematics can accommodate these features; it is about what does the explanatory work in practice. When a platform’s behaviour is driven by accumulated capability, integration capacity, and the path dependence of earlier deals, the resource-based account names those forces directly, while the options account must enter them as parameters. A lens that requires its central phenomena to be supplied as adjustments is a weaker description than one that puts them at the centre. Real options remains a valuable complement for valuation and for disciplining bias (Smit & Lovallo, 2014); it is not the engine.
Four propositions
Stated plainly, so they can be argued with and tested against cases:
Valuation, not mechanism. Real options is a useful valuation and sensemaking lens for buy-and-build, but it rarely governs how platforms actually decide and integrate.
Reversibility is overstated. The organisational commitments created by integration make abandonment costly and rare, so the flexibility the options frame assumes is largely illusory at the core of a roll-up.
Options are not separable. Add-ons interact through shared integration capacity, so they cannot be treated as an independent portfolio of options.
Flexibility falls with scale. Successful early deals tend to reduce future flexibility, the opposite of simple options intuition and consistent with a resource-commitment account.
Why this matters
Real options offers a powerful metaphor for investment under uncertainty. In buy-and-build the metaphor often outruns the mechanism: acquisitions are described as options and experienced as commitments, organisationally, culturally, and cognitively. The further a platform travels along a serial path, the less its future resembles a set of freely exercisable options and the more it reflects accumulated resource positions shaped by earlier choices, the position argued in Resource-Based View Revisited and constrained by the dynamics behind Integration Capacity Is the Binding Constraint. Treated as a partial lens disciplined by the resource-based account, real options earns its place. Treated as the engine of buy-and-build, it misleads.
References
Adner, R., & Levinthal, D. A. (2004). What is not a real option: Considering boundary conditions for the application of real options to business strategy. Academy of Management Review, 29(1), 74–85.
Barney, J. (1991). Firm resources and sustained competitive advantage. Journal of Management, 17(1), 99–120.
Bowman, E. H., & Hurry, D. (1993). Strategy through the option lens: An integrated view of resource investments and the incremental-choice process. Academy of Management Review, 18(4), 760–782.
Dierickx, I., & Cool, K. (1989). Asset stock accumulation and sustainability of competitive advantage. Management Science, 35(12), 1504–1511.
Dixit, A. K., & Pindyck, R. S. (1994). Investment under uncertainty. Princeton University Press.
Kogut, B. (1991). Joint ventures and the option to expand and acquire. Management Science, 37(1), 19–33.
Myers, S. C. (1977). Determinants of corporate borrowing. Journal of Financial Economics, 5(2), 147–175.
Smit, H. T. J., & Lovallo, D. (2014). Creating more accurate acquisition valuations. MIT Sloan Management Review, 56(1), 63–72.
Smit, H. T. J., & Moraitis, T. (2010). Serial acquisition options. Long Range Planning, 43(1), 85–103.
Smit, H. T. J., & Trigeorgis, L. (2004). Strategic investment: Real options and games. Princeton University Press.
Trigeorgis, L. (1996).Real options: Managerial flexibility and strategy in resource allocation. MIT Press.