I wonder if the use of credits is a good compromise for fighting subscription fatigue. It allows a service to make ongoing income in a way that aligns its interests with customers.
You’re paying if you’re using it, but not if you’re not. Of course, credits need to be straightforward—as in how much money they represent, or what clear benefit you get from spending one.
The last thing I want is every web app selling me a bag of gems and gamifying everything for optimal revenue.