Netflix has licensing restrictions too, but the limitation is time/exclusivity (rather than number of copies). You can only watch whatever Netflix owns distribution rights to. Although Netflix does charge more per device, so that's a bit like charging per "copy" of their service on top of the limited distribution.

I'm wondering if you'd really prefer a library system where you could get some titles instantly, but the majority of content is unavailable because some other digital service provider owns distribution in your region for the next 12-16 months. I'd hate that, personally.