Gamers spend thousands of euros on games, hardware and other retaled stuff. They are not afraid to spend money and if they get interested in bitcoin this could lead to some serious buying among that community.
Let alone the mouth to mouth advertisement if they start talking about it in their team chats etc.
Hi
Im sorry mate but you a bit wrong. As of today most people do NOT know about bitcoin.
I would say 2% of earths population is aware of BTC in some minor form maybe 4%.
Most people have no idea what blockchain is, how to make wallet, hell they dont know what faucets are etc.
Knowlege boost is a must. Go Valve.