Yeah but what can you do if a lot of the companies who made the original games aren’t around anymore and didn’t sell the rights to anyone else? Even some of the people who claim piracy is immoral understand that “pirating” abandonware is perfectly fine.
For me it’s pretty black and white here. If you don’t sell me something, there is no guilt anymore and I can download it for free. Same issue with TV shows in foreign languages where you can’t subscribe or buy anything (I’m looking at you Poland, Japan, and any other weird country that seems to ignore the rest of the world).
I like to think of it as fishing old games out of a dumpster. They were carelessly thrown away, no attempt is made to preserve them or make profit from them.