A startup has to make money, Silicon Valley bubble puffery notwithstanding. If you want to spec this out as a money loosing proposition for a charity, fine, bit then don't go wondering "why aren't the startups not flooding into a market I just said they can't make money in?"
My objection is not necessarily to your ideas, but to the absurd idea that startups should be piling in.
My objection is not necessarily to your ideas, but to the absurd idea that startups should be piling in.