The $7 million gap between these scientific titans comes down to one fundamental business decision: Einstein's heirs and the Hebrew University aggressively monetized his intellectual property after his death, while Curie actively rejected commercialization during her lifetime. Einstein's refrigeration patent, though never mass-produced, sits in a valuable IP portfolio that generates recurring licensing revenue. Curie, by contrast, literally left radioactive notebooks unprotected—not out of carelessness, but philosophical conviction. She believed scientific discoveries belonged to humanity, not her bank account. That's noble. It's also financially catastrophic.

The timing and market dynamics also favored Einstein's posthumous wealth. His name became culturally synonymous with genius itself, a brand asset worth millions in licensing deals, museum exhibitions, and merchandise. Curie's legacy, while equally transformative, never achieved the same pop-culture penetration until much later. Had she patented radium extraction in 1902 and held licensing rights, inflation-adjusted calculations suggest she'd have controlled assets worth $800M-$1B today—making her wealth gap not $7M but potentially $1 billion in foregone earnings.

The real lesson isn't that Curie was bad at business; it's that she played a different game entirely. She optimized for scientific immortality over financial security, leaving her estate modest while Einstein's handlers optimized for both. One chose legacy, the other got lucky that legacy became lucrative. In net worth terms, Einstein wins. In terms of who actually changed the world more? That's a debate even $16M can't settle.