That's only because the make money on it. If soundcloud can figure out how to get listeners to pay more money, then more will go to the artists. I'm leaning towards a patreon model like I mentioned in another comment.
I've been paying for the SoundCloud Go+ plan ($9.99/mo) since November 2016, which I match when I buy 1-2 albums on Bandcamp. Its not enough. I would gladly subscribe to some artists and pay $5/mo.