Cryptocurrency it is the new field of modern economy, so government regulation is the logical process of the development.
Yes, it is very logical that the state wants to control the new sphere of the economy. I think that very big money will come to the crypto economy after the legalization, this money will raise the entire block chain to a new level.
If Russia makes this step, its economy will be better, I am sure. This is the wisest decision - they are smart enough not to ban the cryptocurrency. However, I suppose that crypto dealers (miners and traders especially) will pay taxes.