Virtually everyone gets their internet from an ISP that is regulated in the country that the user lives in. There are no technical barriers to implementing a permitting system in the United States.
Linking connections to real people is self-enforcing when there is a usage-based tax.
[1] https://www.africanews.com/2018/04/13/uganda-s-social-media-...
WG traffic is easily identifiable and able to be blocked, it's what happens in countries that ban VPNs.
People have bothered with downloading low-quality Mp3s from Napster, figuring out video codex and modding game consoles to get free video games. If the need is dire enough, the users will figure it out, no matter how high the friction is.
Those with enough technical chops will figure out how to do it by themselves, those with enough intelligence will find resources on the internet, the rest will ask a friend or pay a local IT person to get it set up for them.
That's not "enough", it was extremely nice and probably less than 1% of population
Those remaining very likely have multiple advantages like advance technical knowledge, connection to powerful people in business / governments, money and legal support in case they end up on wrong side of law. There is very little benefit and lot of effort to catch these unless they are running some kind of criminal organization which adversely affects their government/regime.