> Like how a streaming website will say "Hey, you're using a VPN. We don't allow that" - the user's recourse is to turn off the VPN, or find a new VPN that their service won't detect.

No, the user's recourse is to stop using the streaming website and go back to piracy instead.

Any speedbump to UX is a lost customer. You can not and should not assume that users are going to jump through hoops, because the overwhelming majority will not.