>> Spotify is where indies who can't get a record deal go because they aren't marketable

Maybe as a 'former musician' you're a bit out of the loop? But indies don't 'go to Spotify'. You pay $40 to CDBaby or similar distribution services (DistroKid etc) and they distribute your track to pretty much all streaming services and digital music stores. Then they collect the payments for you. Nobody is picking and choosing which music streaming service to be on.