There is no doubt. Sony is actually a great example because they were the ones who tried to remove purchases from Discovery. They faced zero legal consequences. There wasn’t even any discussion of legal consequences because it’s perfectly legal. Ultimately Sony worked it out with Discovery to restore those purchases but they did not do that out of legality or out of kindness. They did it for their reputation. If Sony starts removing your streaming purchases, the same purchases you can make any a dozen other platforms, are you going to continue purchasing from them? Hail nah.

Concord was a bit different in that the content was only available for ~2 weeks so I’d imagine that would fall into some sort of legal grey area and they’d end up being sued or worse. As of yet, I don’t think “how long must ‘purchases’ be available?” has been tested in court.