Baller move from the devs. I wish we lived in a world where the source code of older games were all released and freely available for non-commercial uses.
I really wish games would just become free to download after it's abandoned. You don't see many movies or CDs that just disappear. But games do. A lot come back, but a lot of them just don't ever get re-released.
There are a few PS1 games that I would happily purchase on my PS5. But if it's not available, then I should be able to legally and conveniently emulate on my phone or computer.
Just being able to download them for free doesn't get you very far though. What you really need is the source code and assets and build process so the first minor compatibility bug doesn't make it unusable.
Copyright doesn't cover possession just production and distribution. You can download anything copyrighted just fine, it's just usually illegal to distribute such things with the idea that you're eliminating potential sales.