Sure there is – hiring an advising consultant. You ask him for advice on improving your accounting, or improving teamwork, or analyzing a certain market. Then the consultant examines the situation and tells you his ideas and his advice for implementing them.

You can’t buy individual ideas because it is hard to distinguish between good and bad ideas to buy without hearing the idea itself (which would make the idea unnecessary to buy). The best method for deciding what idea to buy is who thought of it and what their qualifications are. And if you are going to buy ideas based on who makes them, you might as well just hire the person themself (as an employee or a consultant) – it would be more efficient, and the law makes those kind of relationships the most convenient.

> There currently is no marketplace for ideas that I know of.

Have you heard of Venture Capital?