The problem with education is that you compete with a lot of non profits or at least non profit mentality. Universities, for example, view making a profit as contrary to their mission (and to be fair, it probably is).
We are also competing with extra-ingrained incumbents like Blackboard (publicly traded) that own the sales channels despite being bloated, hard to use software. The higher ed market values reputation and a laundry list of features that promise to fix all their issues over a solution that actually resonates with students.