I mean Apple's iTunes is at this point one of the only services that lets you "buy" TV shows and movies, and download and "archive"[1] them (for whatever that means, when the sony/playstation network is allowed to say "we couldn't agree on licensing terms so you can no longer play what we said you bought"). DVDs are super annoying, I have plenty that I can no longer play because they've physically decayed without even being used in years. Of course a bunch are also region coded so I used to have to have two players, one for my home country, and one for the US. I have no reason to believe Blu-ray is any better in those regards.

[1] The iTunes DRM scheme requires your playback device to have a key, so if you don't have a device with that key you'd have to sign in, and then if apple's contracts prevent them from providing new ones maybe they get stuck in the same position.