I own Back to the Future on Laser Disc, I'm really peeved that I cannot play it on either VHS, Betamax, DVD or Blu Ray... absolutely ridiculous. ;)
No seriously, I think the only people who have *anything* to complain about is those that purchased these games on PS3 digital... anyone who owns the original discs should be quiet and quit moaning. The only reason I say that PS3 digital, I think Sony should really start the process of ensuring that digital games purchased work, because isn't that what a digital future looks like? But they dont have any real duty to ensuring they do work on PS4 as it's a new platform.