Pool Corporation is a durable compounder because it sells recurring access to an installed base of millions of pools that must be maintained for decades. Once a homeowner spends six figures on a pool, chemicals, pumps, filters and heaters become near-mandatory buys, and few pools ever disappear, so the base keeps growing. Inflation lifts replacement prices without more units. Even 5% annual growth takes revenue from about $5.3 billion to $8.6 billion in a decade, and buybacks could double EPS. x.comÂ