It's the same problem for Uber. Many Uber drivers make a negative wage. They don't know it, because nobody is going to tell them, but if you do the math, depending on your location, vehicle, and rates, you make a negative wage. Due to gas cost, tolls, maintenance, etc.
The problem here is that the uber drivers and artists are the only thing that makes the platform worth using. Spotify might think their capital is technology. That's because they're stupid. No, their capital is the library of music artists put on there.
If you continue to just antagonize and destroy your own capital that you're using to make money, your business will be blow up.