I think STEEMIT's greatest strength is the value it places on its contributors which sounds like an obvious thing to say but as proved by the surprise and incredulity of people who have never come across STEEMIT before, it's obviously a game changer.
When good things happen to the people who contribute to a site, the site has good things happen to IT.
If I was a major contributor to a popular site and found out that my hard work and effort would produce rewards an ORDER of MAGNITUDE HIGHER elsewhere..I'd be getting itchy feet :-)