It seems to be accepted (here and elsewhere) that owning a physical copy of a game entitles you to possessing the ROM. Is that really the case? Most people say it falls under fair use, but is there any history of this standing up in court (for DVDs or Music)? This is at least a gray area, as organizations like the RIAA & MPAA claim making any copy of their copyrighted material is "stealing". Of course, having a 6yo boy who tends to ruin DVDs, I definitely think it should be allowed.
To my mind, there are a few issues here.
With respect to possessing a ROM image -- I do believe that you can possess a copy, if you own the board, subject to the copy-protection-circumvention provisions in the DMCA.
Can you then legally use those images to play the game on an emulator ? That, I think is the untested gray area.
As far as copying music from CDs, if this was actually illegal, I would have expected folks like the
MPAA RIAA to file actions against folks like, say, Apple Computer (since the ripping ability of iTunes would then be illegal).
In terms of copying protected DVDs, my understanding is that it is illegal in the USA since you have to circumvent the copy protection in order to make a copy. Last I checked, that does not apply to me here in Canada. I have 2 children with Autism who do not always take good care of their DVDs --the very first thing I do with any newly-purchased DVD is to make a pair of backup copies.