Club/state network organization – with standard scheduled classes at very low-cost group rates for anyone interested, with schools letting children miss school for chess tournaments and still get grades necessary to pass according to their sportive achievements.
Vast network of coaches – all chess players have coaches. No one ever learns by his or herself. Thus, they quickly learn correctly.
Economics – the lower the average income of a country is, the more appealing it is to be a chess professional. Chess income is not country dependent. If you’re able to make $1,000 from chess in the US, congratulations you’re poor. If you get $1,000 a month in Mongolia, you are getting three times the national average.
Tournament accessibility and availability – the average chess player plays two tournaments a month and scrutinize their games on breaks.
Sporting culture – in America, the emphasis is on rapid success and winning. In the east, the sporting culture is on overcoming oneself and self-improvement as well as the difficulties one faces as a chess player. You don’t have to come first to be successful. You need to place better than you did last time. In the long run, this leads to less people quitting and more people taking chess seriously. Chess is fundamentally about self-improvement instead of winning.
Weather and other factors – in cold countries with hostile environments, indoor activities get importance as they are frequently simpler to sustain.
The question about pro chess players being mainly from Russia or Eastern Europe is incorrect. The chess professionals we always hear about are from these regions. However, the fact of the matter is most chess pros are from Asia.