Netflix reported substantial growth in subscribers in the months following its push to stop users from sharing accounts with people outside of their household.
I would argue that your average person was probably already paying for Netflix if there was something there they wanted. The password sharing clique is a specific breed of leecher that is 100% at home with using a VPN and a torrent server.
I could always be wrong, but that’s my suspicion. It will be fun to watch, either way.