Yes, Bandcamp leaves a bigger percentage to the musician - from nothing/less. For a variety of reasons, Bandcamp is not actually being used and thus not doing for artists what Spotify has. You can start a personal crusade to combat that, but as long as you do not actually make it work (and I think there is good reasons rooted in what Spotify does well over Bandcamp and the service the former provides that the later won't), this is what is actually factually true.

Let's just skip the part, where we imply it's somehow okay to circumvent fair use, because nobody is making money off of streaming anyway or any such nonsense. Streaming as intended is fine for now. People can just use Spotify, or any of the alternatives, as they are intended and that's fine and on the whole better than anything we had before.