Everybody in Russia who is not a complete idiot already has a VPN that allows to circumvent censorship (for now).

Source: I'm in Russia now.

In the end it'll likely end with whitelists of allowed IP addresses, and that will indeed insure that nobody would be able to access banned resources.

Yes, we have to use censorship circumvention tools to make the internet usable. Especially when it's mobile data. About a year ago I got fed up enough that I bought an OpenWRT router and installed Zapret on it. Now, at least while at home, I can mostly forget that internet censorship is a thing.