[Trisquel-users] Ethical Uses of Video Game Console Emulators?

[onpon4]

A while back, I asked if there are any ethical uses for Wine and was  
surprised to hear that there are quite a few, so now I'm wondering if there  
are some for video game console emulators, because as far as I am aware, all  
software on most video game consoles is proprietary. Does it turn out that  
there are some ethical uses for free emulators of game consoles such as FCE  
Ultra and ZSNES as well?