The publishing catalog is everything. Elton John kept his master recordings and songwriter rights, which means every stream, sync placement, and cover generates recurring revenue that compounds. Billy Joel sold his catalog pieces over time and made most of his money through touring and performance rights—lucrative, but a treadmill. Elton's $80M annual revenue largely comes from passive income; Billy's MSG residency is brilliant but requires him to show up and play the same songs forever. One owns the machine; the other operates it.

Elton also diversified earlier and smarter. Beyond music, he built a lifestyle empire—the Rocketman movie, brand partnerships, and strategic charitable foundations that doubled as tax optimization and brand building. Billy Joel became synonymous with one thing: the greatest live performer of his songs. That's incredibly valuable but also limiting. Elton positioned himself as a cultural institution, not just a performer. When the Rocketman film made $200M globally, that was licensing his story and brand at scale. Billy's leverage is his voice; Elton's leverage is his entire legacy.

Timing and market conditions also matter. Elton sold his first publishing deal in the early 1990s when catalog values were reasonable, then retained everything after. He watched the market explode in the 2010s-2020s when every major catalog became a nine-figure asset. Billy, meanwhile, monetized earlier and more gradually, missing the wave. Elton's net worth compounds from a $550M base generating 15% annually; Billy's $225M only grows when he tours. It's the difference between owning an apartment building and being the superintendent.