That's what I was thinking. The markets is there but in front of it there is this very big bureaucracy that you have to deal with. So maybe point the app towards something like
homework where the educational bureaucracy doesn't have much control.
I don't know how the hell I'm going to get them to pay for mine. They will pay for me to tutor them, though, so I know there is a way.
I believe you are correct, however, in that things will shift when it is "anonymous" and online. Kind of like selling childrens' toys: the kids have to like it, but the parents have to be willing to pay as well.