Try buying GTA San Andreas on Steam - if you didn't buy it before some cutoff date a few years ago, all you can get is the shit AI textures "remaster".
Steam is a powerful force, and I applaud them for staying private and not IPO'ing - but their founders won't be around forever (hell Gabe, please transfer Steam into some sort of public-good trust or whatever, or have provisions in your will making it impossible for whomever inherits the company to enshittify), and sadly even they can't beat down on the studios too hard lest they end up like Netflix.
It's not exactly Valve's fault what Rockstar has decided to do with sales of their games.