We develop a model in which customer capital depends on key talents' contribution and pure brand recognition. Customer capital guarantees stable demand but is fragile to financial constraints risk if retained mainly by talents, who tend to quit financially constrained firms, damaging customer capital. Using a proprietary, granular brand-perception survey, we construct a firm-level measure of the inalienability of customer capital (ICC) that captures the degree to which customer capital depends on talents. Firms with higher ICC have higher average returns, higher talent turnover, and more precautionary financial policies. The ICC-sorted long-short portfolio's spread comoves with financial constraints factor. CUSTOMER CAPITAL-CUSTOMERS' BRAND LOYALTY to a firm-is among a firm's most important intangible assets. In particular, customer capital helps stabilize the capacity of demand flows by creating entry barriers and durable advantages over competitors (e.g., Bronnenberg, Dubé, and Gentzkow (2012)).