Wouldn't it be easier for Netflix to ask for a valid US ID document to its customers to prevent this? Or would this be considered a violation of privacy somehow

Wouldn't it be easier for Netflix to ask for a valid US ID document to its customers to prevent this? Or would this be considered a violation of privacy somehow? Filtering users by ip address should not be allowed IMHO. What if I am a legitimate user traveling in Europe or some other "blocked" country? Aren't them violating my rights then? Or even better, what if I am a legitimate user (e.g. an US citizen) using one of those VPN, on what legal grounds are they denying me the access to the service? (I am sorry if these questions may look stupid to you, please don't kill me :P)