I think there's a massive difference between coaching people to play competitive chess and teaching people to be good developers. For a start, in chess you only really start making good money from it when you're exceptionally good. Most chess players only ever play for their own satisfaction.

The same is absolutely not true for developers. You might well need talent to be a chess player who makes a living from chess, but there is no evidence that developers can't make a good living from their skill without having any innate talent in an area of software development. I've met and worked with plenty of good developers who essentially write code by brute forcing solutions to problems combined with lots of Googling. We all do it.