Literally Gabe Newell, who sails on yachts and has been swimming in money for a long time just from CS and Dota cases alone. And Steam is currently the most popular platform for buying games, simply because there are no alternatives. Xbox's GamePass is trying to do something, but everything there comes down to buying some cheap shared subscription on <https://ggsel.net/en> or <https://kinguin.com>. Many game developers love Steam because of its policies.
We all remember how recently most people at Amazon were laid off because of neural networks, after which their servers went down a couple of days later. They still haven't managed to fix them properly. And what will happen next?