No, because why would a label promote a release that they're making no money off of directly It works for getting buzz, but commercial releases are strictly for profit.
What about the studio musicians, backup singers, the designers and all those people who often live regular lives? There's more to music than the big name artists.
It takes an army of people to make an artist sell. So making it free means crappy music and maybe no music at all.
It works for getting buzz, but commercial releases are strictly for profit.