That may have been true in 1980, but not so much anymore.
In the U.S. these days, hockey players are more likely to come from wealthy families that can afford the exorbitant cost of summer hockey camps, travel teams, and top prep schools.
I went to summer hockey camp, sleep away camps, and i was on the travel team that went to Switzerland. Yeh there were some uber rich kids- one specifically who arrived in a chauffeured vehicle every Saturday, yet the majority were blue collar families.