Non sequitur. Ideas generated (/recorded, transformed, interpreted, etc) by human labor or human capital are scarce because human labor and human capital are scarce.
> must we use a market for absolutely everything?
Certainly not, the more applicable question is whether the change we make to the status quo results in better conditions for people. Every economic system has strengths and weaknesses.
I don't disagree with the concept of a "bug bounty for information" but I'm struggling to come up with an idea of what that would look like in a way that is either more effective or different than patents.