Nikola Tesla

Nikola Tesla represents history's most tragic case of genius without business acumen. His revolutionary alternating current system should have made him wealthier than Edison, yet poor contract negotiations with Westinghouse and his refusal to patent strategically left billions on the table. Tesla prioritized innovation over wealth-building, famously tearing up his own lucrative contracts to fund increasingly speculative research into wireless power transmission and earthquake machines.

The Serbian inventor's financial decline accelerated in his later years as funding dried up and mental health challenges intensified. While early patent earnings from the AC motor and transformer designs generated millions, Tesla squandered returns on failed ventures like the Wardenclyffe Tower, which consumed $150,000 (roughly $5 million today) with zero ROI. His refusal to commercialize or license technology aggressively meant competitors captured 90% of the value his inventions created.

Had Tesla possessed even modest business savvy—partnering with capitalists like Andrew Carnegie or leveraging his patents more aggressively—his net worth could have rivaled Rockefeller's. Instead, he died in a New York hotel room with $6 in his pocket, his legacy reduced to a unit of magnetic flux density bearing his name. The Tesla case remains a cautionary tale: revolutionary ideas without commercialization strategy create zero wealth.