Damn I hope the entire watercooling industry doesn’t collapse. I like having a quiet pc and keeping my gpu cool enough that it won’t eventually kill itself.
You can use hardware store ptfe tubing and vehicle antifreeze. Beyond that, it’s possible to machine your own g14 barbs and then it’s distantly possible to diy waterblocks if you have an entire garage full of machine tools but that’s a monumental amount of effort. You’ll never diy a radiator though.
But they have to be allowed to continue doing it because their software runs all the nukes and missiles. /s