It is pretty clear that near-monopoly platforms are bad for both users and creators. In Spotify's case there needs to be more competition, or the unequitable royalty system they've put in place is unlikely to ever change. In a certain way Spotify isn't that different from the platforms built around services - foodora, uber and so on - they have in common that they impose working in the way the platform has deemed the most economically beneficial, while creating the illusion of workers/creators having a choice in when or how they work.