What boils my blood the most about this is the fact Spotify lured developers in the early days, filled out their functional gaps and got free feature validation through those developers, bought and shuttered the Echonest to ensure devs would mostly only build for Spotify and its (Premium) subscriber base and then invested nothing into the developer ecosystem after that, instead chipping away at the existing tools and stopped responding to developers emails.
It feels like Spotify showed music devs a green pasture and then corralled them into a slaughter pit (so to speak).