See, that's all a matter of perspective. I've got more of an IT background, and I'm extremely suspicious of any paradigm that doesn't let me make multiple flawless copies! The idea of having my "data" in only one place scares the hell out of me.
I guess time will tell on this one. Like with revisiting masters and footage from now in say 50-60 years. Or 100 years. I say footage from now because no sort of long term, totally safe mastering format exists just yet. I would wager to say that in 50-60 years the specifics of digital/computer technology will be radically different, and the specifics of analog technologies will still be fundamentally the same. So, if given 2 masters to revisit in the future, which do you think you would try to work with first? I can imagine what hell it will be for people trying to revisit 4k masters from today... "I can't track down hardware that will run this codec...this doesn't have a SATA port so I need to find a box that has one of those...oh no the disk crashed." With analog formats, although it won't be easy by any stetch, I think that at any point it would probably be easier to track down and assemble the components to build a projector than say a video card with 4k output or what have you.