They can't, but arguably they don't need to. Look at China, for example. Personally I'm on social media to talk to my friends. If they block just 1/3rd of my f

They can't, but arguably they don't need to. Look at China, for example. Personally I'm on social media to talk to my friends. If they block just 1/3rd of my friends, when there's a different non-blocked service my group of friends will move to it. A sort of reverse network effect. The ban and fine will deter advertisers, anyone making traceable payments, people using their real name, anyone operating a business presence, and anyone straight-laced who believes in following the law. Thanks to this fine, nobody's going to be in a hurry to encourage their friends to get a VPN. And thanks to app stores the state can also get the apps yanked from almost all phones. That's more than enough to trigger the reverse network effect. The aim here is to either get Twitter to the negotiating table, or to punish them. That's accomplished by blocking 90% of users, the last 10% really won't make a difference either way.