This is a large part of why I won't pay for the premium service. I don't know how much creators get, but I know they always work their way toward pitiful payouts like Spotify. For an example of this slide, see how microstock has gone from something you could make a living on to ever-shrinking payouts and increasingly opaque bonus structures.
A recent example is Shutterstock's change to the payout and bonus structure.
https://www.reddit.com/r/photography/comments/guv6s3/shutter...
https://xpiksapp.com/blog/2020/new-shutterstock-earnings-bre...
The minimum was 25 cents per image. That could add up fast when an agency buyer with a huge bulk credit plan took notice of your portfolio and bought it out, then returned every time you added more. It's now 10 cents per image.
Spotify got there fast. YouTube will get there if it isn't already.