This is why I wish copyright would expire after 15 years or so instead of forever. Especially for software. Very, very few people are profiting from 15 year old software.
https://www.gog.com/game/star_wars_rebel_assault_1_2
Software products can have a surprisingly long life. (Which can also mean a surprisingly long time of providing customer support, too.)
Even the works that are still generating revenue after 15 years, surely most of them have already made 99% of the money they are ever going to make. The people buying rebel assault now are just a few nostalgia seekers. It will add up to a tiny tiny fraction of the total copies sold in it's heyday.
Except the ones (for example Nintendo) who do have a lot of cash, influence groups and lawyers to enforce their rights as long as they want.