Rockefeller built a wealth-generation machine that compounded relentlessly—Standard Oil wasn't just a business, it was a monopoly printing press that generated $90 million annually while he sat back and collected dividends. Every strategic move (horizontal integration, vertical control, pricing power) fed back into the core business. Roosevelt inherited roughly $10 million and then proceeded to spend it like a man on a mission: political campaigns, expeditions, publishing ventures, and a lifestyle that made him perpetually cash-poor. His $365M inflation-adjusted peak sounds impressive until you realize it was a snapshot in time, not a self-sustaining engine.

The structural difference is brutal: Rockefeller's wealth was passive and growing—his oil shares continued generating returns whether he slept or worked. Roosevelt's wealth was actively depleting. He couldn't help himself; the man was wired to *do* things, not sit on assets. While Rockefeller reinvested profits into eliminating competitors and consolidating control, Roosevelt spent his capital on living the most interesting life possible. One built a financial empire; the other built a historical legacy and went nearly broke doing it.

Here's the kicker: Rockefeller's antitrust breakup actually *enriched* him because he owned pieces of every resulting company, while Roosevelt's wealth simply scattered across safari expenses, book royalties, and speaking fees—income streams that didn't compound or control anything. In a head-to-head wealth battle, passive monopoly income crushes active-lifestyle spending every single time. Rockefeller understood the assignment; Roosevelt was too busy being the most interesting person in the room.