Too many people to reply to, so I'm not quoting anyone. You guys are all talking from the publisher's point of view. I'm talking about a consumer's point of view.
New computers will run old computer games that you have on your profile. New iPhones and new iPads run your old iOS games. Correct me if I'm wrong, but I believe the same is true for Android devices.
I guess this is just really further proof to the "stone age" that consoles themselves live in. If they can't keep up with the advancing of technology and consumer expectations for owned digital content, then they truly are dinosaurs by nature. I only hope Microsoft tries to really change the game with the next Xbox, because continuing down this console path is continuing down a path to irrelevancy when you have other major devices growing your market instead.
Games a consumer purchases on a digital account should be available to play on any device that user has such an account tied to. Such is how the world has evolved outside of our slow console cycles, and such is the new standard of consumer expectations.
I congratulate Nintendo for at least trying to get this right, but Sony is outright blind to it. It makes me sad to see such a flaw.