Yeah, it definitely requires some luck or planning. I mostly meant that all simply to say, I think that, with Blu-ray physical media, the odds are pretty good you'll be able to watch it in the future, via some means. Right now, used PS3s and Blu-ray players are pretty cheap, used PS4s that haven't been updated in a few years are available, etc. There are ways to play Blu-rays even if all the supporting online infrastructure is shut down, even without resorting to breaking any DRM or pirating. That's a contrast to movies on services like PSN.