That can happen. But on soundcloud you also get followers, replays, loves etc. I find artists there all the time I would never find anywhere else. myristica is one: https://soundcloud.com/myristica/into-the-night or this: https://soundcloud.com/myristica/beyond-the-glow so good. I'd say anything good is built slowly, iteratively, each fan/follower appreciated and eventually you keep putting content on as many channels as you can, one will pick up or hit some sort of momentum and you run with it. New artists are discovered all the time on Soundcloud. I can't live without BLOOD BROS. I have shipped tons of product to this: https://soundcloud.com/maddecent/blood-bros-iii-back-in

Not against Quora in anyway, I like it, get traction however you can wherever you can and especially places where people are looking for what you make.