This has always seemed like fear-mongering to me, because for the pooled proportion of plays to be completely different from the mean of the per-user proportion, there would need to be an extreme discrepancy in amount of songs listened to per month and/or in the kinds of songs played by those who pay for premium vs. those who opt for ad-supported. No, if I only play the same artist for an entire month, they likely won't get $10 (-$2 in expenses), maybe it's $7 or maybe it's $12, but I don't see how you can go from there to "Beyoncé is getting all your money!?!?!" Are there any specific examples of artists that get much more or much less than you'd expect, or is this all just a thought experiment?