Survive?

They don't need money to survive, they just need exposure which is what Spotify provides them. Musicians can survive indefinitely on nothing but praise cocaine and exposure.

/J

Oh ya know just simply get a billion streams per song

700,000 streams per month across their entire discography gets you to the poverty wage for an individual.

Plus it is entirely passive income once the songs are out so they could tour live in addition, or go get a non-music job if it's not enough.