I guess we're talking about different things - you're talking about the high end positions, I'm talking about the average case. To get my analogies even further muddled up, you're talking about musicians signed with a major label, I'm talking about all musicians, from rockstars to people busking in subway stations. The expected value is going to be very different if you're only taking the top N percentile.
(not particularly relevant, but I have friends with similar qualifications and experience as you who work / worked in the industry at... shall we say more mediocre studios. I suspect their perspective on this topic is somewhat different from yours.)