I've been adjacent to artists my whole life btw, lots of friends who are musicians, many of whom have done it before Spotify existed. None of them do it for a living. They've all tried. Yes even before Spotify. It's not possible unless you're extremely good. Even then...
This is btw why I've never done music even before Spotify. I knew there'd never be any money in it, and I'd spend a fortune on equipment that just wouldn't pay for itself and I'd be depressed about it. I'd pour blood, sweat, tears into something that would ultimately make me more upset. Sure I could be an amateur... but most artists are not amateur.