Totally understand your opinion, I just think there's something inherently different between games and movies.
Games become outdated fast, and are constantly evolving with very few franchises turning a profit from their older titles, having to always come out with something new to keep themselves relevant. Some movies are old but feel like they were made yesterday, masterpieces such as Jurassic Park, The Matrix, etc. Those are going to take a lot longer to become obsolete and part of history, it's also a lot easier to turn a profit from them.

Have a kid choose between River Raid on the 2600 or Ace Combat 7 on a newer console, they'll always pick the newer one because of how much things have changed. Therefore, some things would and will become unprofitable, if they are unprofitable, there'll be no incentive in making them available for the public.

I'm not saying companies should go out there and make all their old games public domain, we should just have better copyright law. Something that states that "Your shit is old, you're not making a substantial amount of money from it, so it makes no sense to sue someone for getting a copy from the internet".

As I said in the post too, no real excuse for illegally downloading older games, but I wouldn't pay another subscription just to access 20-30-40 year old titles, specially when so much new stuff is coming out.

I don't mind collections as well, as long as they bring something new to the table. The Mega-Drive games on Steam used to be just an emulator lazily thrown together, now they have a lot more to them and are a very nice price, I don't mind buying those at all. The Mega-Man collections were also great, all the Sonic stuff released throughout the years were great ways to play classic Master System, Mega-Drive and Game Gear games, etc. But even then, some games would be lost forever, things that didn't get proper licensing, things that didn't sell too well, things from defunct studios.

Know what I mean? It should be free to access as they're part of history and are not easily attainable, doesn't mean companies still wouldn't be able to use them, sell them in better, improved packages, things that could potentially rival emulation. It'd be a great reason for Nintendo to make actual decent official emulation solutions for example.