> The best product in this case, is no product.
Pen and paper is a product too, which eventually will be replaced by tablet and stylus eventually.
> This is the last thing on people's minds when choosing schools.
Deciding something is unimportant, is a valid choice too, and in that case market helps to not waste resources on unimportant things, and focus on important things instead.
But then it's not required for this to be a top priority for all parents, the decision of parents who are specifically interested in mathematics would be enough to create the right incentives for the market to solve the issue.