There is absolutely no need for them to support any of this. They don't need to spend even one cent of their money on this stuff.

The world is literally filled with people who love these games so much they learned computer hardware and programming because of it. People who love these things to the point they'll reverse engineer the consoles and make emulators to make sure they are playable again long after the hardware has crumbled to dust. People who obsess about things like cycle accuracy and undocumented hardware behavior in order to make sure even the nonsensical bugs in the system are recreated because there were games out there relying on those things to do something awesome with limited resources. People who will reverse engineer the games themselves and make open source engines for the content. These people are beyond awesome, they literally do this because they enjoy it.

All these corporations have to do is get the hell out of these people's way, for they are doing god's work.

That's literally all they have to do. They just gotta shut up, stop whining about their "lost sales" and let these people do what they gotta do.