You don't sell a company if you don't believe its future can be better with you in command (most of the time)
Keep one SRE to keep the servers running, one guy to do security updates to the app, and the team that acquires rights to music.
Labels literally negotiated their own royalty rates down in exchange for shares in Spotify. It’s the perfect way to push artists out of receiving earnings.
I think record labels would be first in line to buy Spotify if it was ever for sale.