> I think it’s the community’s job to lobby game publishers to release source code for games and severs

Very very unlikely (unfortunately), especially for outfits like Nintendo. As long as there are eShops and remasters, there is the opportunity to cash in on old IP. And getting source code for games is one thing - getting the assets are another. Even for the example of Doom that is everywhere, only the shareware assets were set free.

For consoles, emulation and reverse engineering are probably the best and likely only way forward IMHO.