When I was a kid (Napster era) I paid for nothing. The artists weren't stream-able, so there were no royalties either. Today I buy every damn song I listen to, thousands of dollars worth. When an artist I like comes out with a new CD, I buy it immediately.
I don't use Spotify or Google Music. I don't know what they pay to the artist. What I do know is my friends that use them have zero reason to buy a CD. I also know even the more obscure stuff shows up on there. Once they are older and have a family, they certainly don't have time to go to more than a couple of concerts a year, and they most likely are not wearing band t-shirts past 30.
The way radio worked, you heard a song once and a while, liked it, most of the artist's other songs you rarely or never heard. There was a big incentive to buy the CD.
Musicians need to have a freemium model, where you get free, unrestricted access to some songs, and then if you absolutely love the band you pay for the rest (or you can pirate it, but there are a few hoops to jump through for that one.) It has to be convenient, on demand, and a single standard. May be its lossless audio, or may be its just mastered differently. Someone who knows more about music would have to figure it out.
Despite all of this, my favorite musicians regularly release new albums. There are a few duds, but the music is good. Countless genres blended together and mutated, with virtually unlimited choices. As far as I'm concerned, this is a music renaissance.