The best part of TTRPGs is WOTC already fired the shot over the bow with its licensing scandal. So all the third party creators have scrubbed WOTC specific stuff from their materials and are now working on system agnostic adventures that can run in Pathfinder, D&D, 13th Age, or Tales of the Valiant.
And at the end of the day, even if he buys every single company, you don't have to keep buying the products. Telling a story with dice at a table is free, except for the cost of a pen, paper, and a dice set.
Yup. Hasbro-WotC has already dragged their name in the mud, and they're really busy digging their own grave with the recent push for digital-first/virtual-tabletops-first stuff and micro(macro)transactions. Meanwhile, they forgot that tabletop RPG rules have always been flexible and homebrewy (and the old OGL reflected that ethos perfectly), and you can't hyper-monetise them the same way as video games.
They're making the same mistakes TSR did. (Those who forget history are doomed to repeat it, yadda yadda yadda.) Except in TSR's case, they got bought by WotC who pulled an extremely community-supportive, business-ecosystem-building move by introducing OGL. Even if Elon bought out WotC I doubt he is actually going to be interested in fixing whatever's actually ailing them right now, dude's too busy fighting woke demons than actually doing sound business/pro-community moves.
Or just do what rich people always do and take out a loan to buy it with other peoples money. When you have that much wealth, taking a loan is never an issue. That is why the notion that some rich person can't pay more taxes or whatever because all their money is "invested" is completely void.
we must all download / save / preserve all dnd content we possibly can, right now, if we want to have access to any of it in the future. We all saw what he did to Shitter.