See what I said above. They can remove everything but the ability to play PlayStation 3 games and still fit your definition. Are you comfortable with that idea?
I certainly wouldn't act like it's the end of the world. Sure, I'd feel a bit annoyed that they removed all that stuff, but I wouldn't be all "baaaaaaawwwww I can't do x y and z on my games console any more".
Why? I barely use any of my PS3's non-gaming features. I don't have anything that isn't game data stored on the hard drive, I don't use the music player (except for Burnout Paradise/Wipeout HD custom soundtracks), I don't have images stored on it, I don't have saved video. All I have are game saves, downloaded games (the aforementioned Burnout & Wipeout), game install data and around ten MP3s to use as a custom soundtrack. I only use the PS Store to either buy a game or grab DLC, I don't buy videos or whatever off it.
So yeah, Sony could remove music playback, image support, video playback, PS Store and I wouldn't be too fazed. The PS3 would still do what I wanted it to do and what I bought it for - play games. The loss of every other of the system's features would be a mild annoyance, but I still have other devices that can play music, video, images, have Linux installed onto them. So it's not like I'm permanently losing the ability to do this or that.
If people were really *that* insistent on still being able to keep otherOS they could've easily gone out and purchased another PS3 that they would use to play their games et al on, and have the existing unit dedicated to otherOS (and would not get updated). When there's a will, there's always a way... I guess people weren't
that desperate to retain the otherOS capability.