OK, I'll bite.

Even Value has tried to argue that Steam is a subscription service and that you don't own Steam games but rather licenses to games on Steam.

If you open a printed, physical book, you'll likely see something like this printed on the first page: "copyright [author name], all rights reserved". If the book was printed in the last year, it might also include language explicitly forbidding AI training and other forms of data mining.

If you look at the back of the packaging of physical movie releases (so for example a DVD or Bluray case) you'll find find something like "this movie has only been licensed for personal used. Public exhibition is not permitted"

Because media has always been licenced. The question therefore is less about license vs ownership and instead about what makes a fair license. SKG argues, that the licensing as it currently exists is deeply unfair. Unfair enough that it possibly already violates EU law. That's what the lawsuit in France is about.

A group could take SWTOR, add content, and have people donate/pay for it despite the IP holder not wanting their IP used that way.

Not really. The game has, as you yourself noted, been licensed to you. The granted rights don't include commercial activity. Publishers could even put the videogame equivalent of the language from the movie cases into their licenses to spell that out.