Facebook makes money selling data for advertising. They don’t host and maintain what’s app for the good of mankind. every single thing you send on the app is being harvested for data and you know it. It is decrypted at each end and hovered up for sale to the highest bidder.
Nvidia is making a thing and selling it. No matter what happens with AI tech, they are going to keep their winnings.
Everybody else… well they borrowed/raised and spent a FORTUNE on R&D, chips, and electricity to make a product that has no realized commercial value (yet?). They are either going to figure out where the money comes from soon or the bills gonna come due. The next 12 months are going to be popcorn worthy if you like watching the tech industry.