That's why I said "someone" and "something", because I'll be the first to admit I have absolutely no clue on how that would look like. Humble Bundle Choice is something I do like, but it's steam only...while that's cool in terms of proton, steam deck and so on, Steam is still a service that has to work, because without I can't use the products. With gog I can just save those files and use them whenever and wherever I need to...
Windows, Linux...doesn't matter much.