Android in the last couple versions has locked its file system down too
Really!? I'm a bit behind, but somehow this surprises me. I mean, not the intention, bc Google's motto these days is "definitely be evil", but that it had gotten this far this fast.
Anyway at a guess all you'd have to do is download whatever you want, then root, profit, then turn off root and it wouldn't even know? Plus the tons of ways that you can do things without even needing root access these days, and I haven't even mentioned yet a custom ROM. And ofc piracy, where someone else obtains the video files, e.g. ripping from a physical medium. So they will most definitely lose that flight. And in the meantime, the most honest customers are the ones who suffer.
Overall I just chalked this up to: anyone who uses Windows (or iOS) basically is at the mercy of profit-seeking behaviors. You will own nothing, and like it - or else!:-(