If you go to his profile on SO, you will see that he advertises his company.
Also, I wasn't speaking about "professional gamers", I was speaking about every day people that forked over $100 for a game (or often $1,000 for many games) and then spend years playing it at home - unprofessionally, for no money.
It's just how some people chose to spend their time because they themselves find the experience gratifying. And in his case, there is at least a small pittance of financial gain through advertising and publicly verifiable reputation.
Also, I wasn't speaking about "professional gamers", I was speaking about every day people that forked over $100 for a game (or often $1,000 for many games) and then spend years playing it at home - unprofessionally, for no money.
It's just how some people chose to spend their time because they themselves find the experience gratifying. And in his case, there is at least a small pittance of financial gain through advertising and publicly verifiable reputation.