I suppose to clarify, I would consider an audiophile to be anyone how cares about music reproduction enough to have some sort of playback system besides a smart phone and earbuds or an Alexa device.
When I was in college it seemed that pretty much 50% of men's dorm rooms had some kind f decent stereo. I could count the women's dorm rooms with decent tunes on one hand. So that would put the population at about 12.5% of students with decent music back in the 70's.
Now I don't really know anyone besides myself (and my system is pretty modest) who owns anything other than "lifestyle" products. So that was the direction I was trying to go with this thread. There is so much expensive equipment out there...who buys that stuff?