I don't think "tragedy of the commons" is the appropriate term for what's going on here. These movies aren't a "commons", they're all privately owned by a bunch of different private entities. They used to license them to Netflix to be streamed, but now they've pulled back from that a lot so they can operate their own streaming services.

"Tragedy of the commons" is when a bunch of private interests use a publicly-owned resource in a greedy way and end up ruining it for everyone. I don't think this quite applies here, but I don't know of any other term to call it because I can't think of any non-internet analogies.