Yeah we do. While I don't like Google tracking where I am from my cell phone when location-sharing is off, I love listening to music on Pandora and Spotify and I would never discover the new songs I do if there was no option to like or ban songs and evolve the station.

I don't see how either of those are "data-backed business models". Pandora/Spotify have a very clear draw for people which exists regardless of how much data they store on people. They absolutely can and do use data to _enhance_ their core offering, but if they stopped overnight it would not cripple their business immediately.

Both aslo offer a very clear service, (streaming music) and both only really collect data to improve your music experience.

Facebook seems to grab whatever it can, just to make money.