Once google's shareholders have wet their beak, the on-campus sushi bars and manicurists and $400k pay packets are paid for and the Taylor Swifts of the world are paid off there isnt much left of your subscription to pay for the long tail of content creators who dont have Taylor Swift's leverage.
Which is why many of them say things like "skip these ads if you like Im not getting any of it" or "Im here primarily for exposure, I make my money elsewhere".
Youtube has a 55/45 (creator/google) split with content creators. YT premium views also pay substantially more. Most of the money youtube makes goes to creators.