As the things stand lot of European can move over to Russia.The problem is Russia gets little in return from these countries since it mostly imports technology or high technology items. That is a problem Russians have always had. Russia's main issue with these sanctions is getting cut out from Western tech. Russian researchers have basically been banned at this point. And China is upholding this Western mandated research ban because they also do not want to be cut out.
China's internal economy and population is large enough to rival the EU and the US put together. But that is only when you do not consider you have the rest of the world basically brain draining into the Western research centers.
Anyway, as the things stand Russia doesn't want to be cut off from Europe, they strategy more centered around to decouple Europe from the USA.
At the moment Europe doing the dirty work, and the USA enjoying the fruit.
The evolution of the war , and the econmical strategy of Russia point to this direction.
They are ready to make and agreement with Ukraine, and the EU, they are ready for many things- from tomorrow the EU can get gas for fraction of the current price, all that it takes is to gurarantee the independent and secure relationship with Russia.
And I thnk the importance of technology is a bit overblown, as soon as the world ttrade start to break down the current technological development strategies will go down on the toilet.
If china leave the party then half of the dev budget of the apple become smoke. Add to that the increased production cost, and the end result is slow and painfull development cycle.