For example, from my immagination and experience (as I don't have proof), many young people of color in America choose to spend their free time with other things than gaming. Like playing sports or other activities. You can also see this in the percentage of professional black athletes in Baskettball and Football where they have a vast majority. This could also be because many of them don't have that much wealth in their younger years to afford a decent PC or choose to spend their little money on other stuff.
And the wealth factor also plays a huge role why so many people of color are serving jailtime because of drug or other charges.