If all these sanctions on Russian financial institutions leads them to adopt public block chains like Ethereum and Bitcoin as their main way of doing finance, it will be the best thing to happen to Russia since Peter the Great.
The true potential of Russia has always been kept under by corrupt governments with a basket case economy. Having a transparent system that largely regulates itself would bring in investment capital to average Russians that is usually tied up in legal and illegal gate keeping. Imagine Russia with an industrial base like Germany to match its raw natural resource.
But again, the problem would be Russian leaders (especially financial) would have to show humility, and bend themselves to the system and ethos that surround blockchain and not try to mold it to their own whims.