That's what is exciting, and what will allow more niche writers to succeed. The platform is reasonably internal looking at the moment. Introduce yourself, and Steemit based posts do the best.
But, as the community gets educated and introduced, curators will naturally look further afield for their content fix, and writers with specialised knowledge will benefit from this (when maybe they are not benefitting just yet...)...
RE: Steemit’s Evolution: Quality Content Rising to the Top!