I don't really understand the negativity. Ideas, like advice, have intrinsic value. People are caught up with the notion of an "idea" (like 'Uber for X') and do

I don't really understand the negativity. Ideas, like advice, have intrinsic value. People are caught up with the notion of an "idea" (like 'Uber for X') and don't realize OP is discussing a market opportunity. It's very possible OP has an idea that can generate value for an obscure niche that's slow to adapt. This happens all the time - the wheel is constantly being reinvented in different industries and markets and plenty of people make a decent living doing stuff like this. Anyway, my advice is because everyone is caught up in stigmatizing "ideas", it's likely you will not find an adequate market available to sell your idea or get paid enough for it. You're better off discussing it with people you know. Frame it like "There is an opportunity in market X that is not being pursued, likely because of reason Y. I understand this market/problem very well and could explain it to you in great detail. If you decide to pursue it, I'd like modest [advisor shares/dividends/etc.] in return" or something to that effect.