He's creating work for Chinese workers. Who are we to say what kind of pay the Chinese "should" be requesting? It's rather elitist of us to be telling them they are being taken advantage of. This is a job they've sought out and want to keep! It's the best option available to them.
Until I expand the market further, I wouldn't really even give myself that much credit. I think most of my business comes from replacing the established middle men with my software solution. Although it is my ultimate goal to give more artists (everywhere in the world) more business!
You really don't think the middlemen are the ones doing business on your platform? You've simply squeezed the margins so that the artists get even less.