The Illusion of Crowds

Private capital markets do more than finance companies; they manufacture judgment.

In a well-functioning market, investors with different information, risk tolerances, and time horizons assess the same opportunity set, and the resulting prices and allocations aggregate those views. That is why James Surowiecki’s ​“wisdom of crowds” framework is a useful lens for evaluating the energy transition capital markets. Collective judgment works best when four conditions are present: diversity of opinion, independence of judgment, decentralization, and an effective mechanism for aggregation. Private capital markets can satisfy those conditions, but only when the investor base is genuinely heterogeneous, decisions remain meaningfully independent, allocation authority is not overly centralized, and funding outcomes synthesize distinct rather than repetitive judgments. 

The central finding of this paper is that the contemporary energy transition-focused private capital market projects the appearance of a wise crowd while exhibiting the empirical behavior of a much more correlated one. 

Between 2021 and 2025, we tracked more than $88 billion of new capital raised by almost 280 individual early-stage venture, growth, private equity, and infrastructure strategies in the United States, Canada, and Europe. That capital supported more than 6,400 individual financing rounds. On the surface, these figures suggest a broad and well-capitalized market. Beneath the surface, however, the data points to a more concentrated and correlated structure: a relatively small set of large funds, large rounds, repeat syndicates, and recurring company exposures accounts for a disproportionate share of the market’s actual capital allocation. Stated in Surowiecki’s terms, the aggregation mechanism is intact, but the three conditions that make aggregation wise — diversity of opinion, independence of judgment, and decentralization — appear meaningfully weaker than the market’s headline figures would suggest.

That concentration matters because the energy transition is precisely the type of investment domain in which the wisdom of crowds should be most valuable. The sector combines deep technical uncertainty, long development cycles, commodity-market exposure, policy dependence, project-finance constraints, manufacturing scale-up risk, and uncertain exit pathways. No single investor type is likely to hold all the relevant information. A healthy market therefore needs many distinct forms of judgment: technical venture underwriting, commercial growth underwriting, infrastructure finance discipline, strategic customer validation, project-level diligence, and public-market comparables. The issue examined here is not a shortage of capital or investor sophistication. It is that the market’s most consequential pools of capital are often aggregated through overlapping channels, weakening the diversity and independence of the judgments being aggregated.

Our 2023 report, ​“The Missing Middle: Capital Imbalances in the Energy Transition,” argued that energy transition-focused private markets were bifurcated: abundant early-stage capital at one end, substantial infrastructure and late-stage capital at the other, and a structurally insufficient pool of fit-for-purpose growth capital in between. This paper identifies a second, related and equally important market-structure problem. Even when growth capital is readily available, it is often deployed through a concentrated set of overlapping relationships. What at first glance looks like stage-by-stage validation may, in many cases, be the same investor cohort extending exposure to the same limited set of companies over time through larger financing rounds.

The next phase for the energy transition-focused market is not just about raising more capital. It is about rebuilding the diversity, independence, and decentralization required for private capital to function as a genuinely wise crowd.