In year 2000, Nokia had a market cap of around $100 billion and Nvidia had a market cap of around $2 to 4 billion.
Nvidia just made graphics cards, at a time when games were still being written for MS-DOS. Nobody was to imagine the real money to be made from repurposing these graphics cards for crypto and now this AI 'application'.
Tbf only 6 years after that Jensen was already betting on GPGPU
And even the games market.