Rocky Marciano's $12M ($1M in 1950s dollars) looks laughable until you realize he had zero leverage. Boxing in the pre-television era meant purses came from live gate receipts alone—Marciano's 49-0 record generated maybe $1M per fight, tops. He had no endorsement infrastructure, no merchandise royalties, no closed-circuit broadcast rights to negotiate. Ali, fighting in the 1960s-70s, had access to closed-circuit TV deals that multiplied fight revenues exponentially. His Frazier and Foreman bouts generated $5M+ purses because millions could watch from theaters nationwide. That single technology shift—television—created a 5x wealth multiplier that Marciano never accessed.

But here's where Ali's story gets darker: he should've been worth $150M+. His peak earning power (1966-1967, pre-conviction) was unprecedented for combat sports. Then came the Vietnam draft refusal. He lost nearly four prime championship years (ages 25-29) when fighters earn their biggest purses. That's conservatively $30-40M in lost ring earnings, sponsor deals that evaporated, and compound investment returns he never made. Marciano retired undefeated in 1955 at peak power and cashed out immediately. Ali fought through his 40s partly because he *had* to rebuild what conviction cost him.

The real kicker? Both men were terrible with money—they just had different problems. Marciano lived modestly and hoarded cash, letting wealth compound passively. Ali was generous, made bad business decisions (terrible investments, hangers-on), and paid massive legal fees. Yet Ali's $50M still dwarfs Marciano because he fought in an era where a single televised fight paid more than Marciano's entire career gate receipts. One man lost everything to principle; the other simply fought too early to ever have 'everything' to lose.