> That’s true but I don’t think you really need $10B to escape the grind, that’s more of a “huge bank account number” kind of amount He just happens to have ar

> That’s true but I don’t think you really need $10B to escape the grind, that’s more of a “huge bank account number” kind of amount He just happens to have arrived at $10B because some investments worked out. He could have been satisfied with 'only' $1B or $100M or $10M. It may be that it was simply an 'accident' that he overshot his escape-the-grind number. And given the number of times he has started (successful) companies, it seems to indicate that he may be more in it for the challenge.