Good question. I dont know.
But when it comes from me, I joined Steem for earning money. But this money will also benefit the platform. Why? Because the stuff ill be buying from this money would be cameras, for the blog, donations and etc. Now tell me, is it greedy?
Good question and I love money and I love to help other people and I love free markets and greed is more of an emotion that may or may not be there during life like sadness and anger and laughter and everything. Upvoted.