Dont most vpn companies cycle their active ips? Or is that more of a niche thing only one or two options do
They have dedicated blocks of IPs assigned to them, he would just have to block the blocks.
if vpns still run in china where the entire security establishment (including all the network infrastructre) are playing cat and mouse with trying to block them i think they can manage it for a tech company clinging on with 1/3 of the required workforce.
Vpns are open source, commodity software. You can set one up with a script at any webhost. He would have to block every site that lets you spin up server, which is most of the internet.
Its not possible to actually block vpns without nation state access to interent infastructure, and even then it’s not easy.