>No one has a right to use anyone else's software. I don't have a right to use Windows 3.1 in my lifetime. I don't have a right to play some random game from the 90s that only had 100 copies made. It's okay for software to be unavailable or be lost.
If you replace software with book, music or movie, would you still claim that? That would kill a lot of culture and cultural studies. Are software that different? More specifically, are games that different?