Have you ever read "The Innovator's Dilemma"? Your case sounds so similar to the central dilemma in that book, although that's talking about the scale of large firms.

If you've already got some success monetizing your following, then Steemit makes a compelling but difficult case. Some people have hundreds of thousands of followers and struggle to make anything from it. If you're not making money from your existing following the decision is easier, because even transitioning a fraction of them to Steemit could put them among the top followed posters here, and the revenue would follow that.