Gaming Reality

So, what is it that is required to be considered a pro gamer and not an addict? just participating in tournaments or actually winning? Because if it's the former then it is just impossible.

I would say it's the same thing that defines any other "professional" - if playing games is your job, pays your bills, you are a pro. If playing games gets in the way of your job or otherwise messes up your life, you're probably addicted.