The lack of focus on youth players will come back to bite Russia as juniors from China, India, and other countries surpass the Russian players. Russia is suffering from problems of demography and diversity. On the other hand, the Russians could buy players from other federations to create super teams and players eligible to compete on the elite level.
What is not mentioned is that many young Russian talents leave the country early and are developing in other nations. Putin is having difficulty stopping the brain drain from his country. Older players have an affinity for Mother Russia. Youngsters who have left earlier have few cultural ties or loyalty.
If Russian oligarchs put money into “buying” chess players like a certain chess benefactor in the US has done, there could be an interesting chess war on the horizon. IIRC, Kramnick is supported by one of the oligarchs even though his wife is French and he maintains residence in several countries. A similar situation also exists for Karjakin. Something deep in my memory banks recall some sort of power structure connection regarding his second (present) wife.
Does Maria Butina play chess? 
I suspect chess in Russia is being seen as an “Old Way”. There are plenty of excellent players, but when the USSR fell, so did the government orchestrated machine that used chess as a way to show off Russia to the world.
I’m guessing that the difference between the rich and poor is Russia is very pronounced. The younger players with talent probably are forced to move to other countries where they can better compete and I’m sure coaching prospects are far more lucrative outside of Russia. That is, they’re more likely to find students with deeper pockets that can pay the real going rate for being coached.
I would guess it’s hard to make a living teaching chess over the internet, unless the player is just really well known. Otherwise, I’d guess that moving someplace to teach in person would be much better. I would think finding players who coach-for-cash over the internet are a dime a dozen nowadays. So a really good player would make a much better living in different country.
Plus, in my opinion, the quality of self study training material over the years has gotten much better, and much more vast. Especially the stuff you can load on a computer. It might be getting harder for coaches to find students (other than kids) that would even want to be coached until they hit some level they feel plateaued at.