4 ideas
High returns attract capital, which expands industry capacity with a lag, which floods supply and drives returns down; low returns cause capital to flee, capacity to shrink through consolidation and exits, and returns to recover. Because supply responds slowly and predictably while demand is hard to forecast, investors should analyze the supply side, not demand, and buy industries where capital is leaving and avoid those where it is pouring in.
Companies and sectors with the fastest growth in assets, capital expenditure and share issuance go on to underperform, while those shrinking their asset base outperform. Heavy investment and equity or debt raising are warning signals because they mark the peak of the capital cycle, when management and investors are extrapolating good times.
The key test of management is whether they invest when capital is scarce and returns prospects good, and cut back, buy back stock or return cash when everyone else is expanding. Managers who are paid on growth metrics or who follow peers into acquisitions and capacity expansion destroy value; owner-like managers with long tenure and significant insider ownership are more likely to act against the herd.
The capital cycle also applies to high-return firms: returns fade only if competitors can enter, so the question is what prevents capital from flowing in. Companies with durable moats—network effects, brands, switching costs, regulatory barriers—can sustain high returns far longer than the market assumes, so investors systematically underprice the longevity of such franchises.