I'm not sure about Tor, but I know from my friends in Russian, who have direct access to this information, that the Russian government inherits all the practices and technologies from China, with DPI and all the things. Now even VPN + shadowsocks won't be a permanent solution.

It's obvious cooperation of governments that can help each other, one with tech to control, and the other with cheap resources for manufacturing. (you can google how Russian almost sold part of territories to China, there are even cities where all the administration are Chinese).

Not as of yet. Actually, if you use tor (with out-of-Russia exit nodes, which I think is the default when using it from Russia?), you can already freely access all the sites blocked in Russia, non-onion ones. But, obviously, tor and VPNs are good solutions only for people willing to go an extra mile to get to the prohibited content.