There is a strong relationship between knowledge and money. In some situations money and knowledge are economic equivalents. If you have enough money to meet your basic expenses, you would often be willing to trade money for knowledge.
People often take low-paying jobs if there is an opportunity to gain valuable knowledge that can be translated into better opportunities down the road. And obviously people pay money to go to college and gain knowledge. It is often said that knowledge is power, but that's just another way of saying knowledge is money.
There's probably someone within a block of me right now who would gain a lot by hearing something I know about business. And there's probably something I could gain by learning some fact that one of my neighbors knows. But we might never meet. And if we do, we might never discover what valuable information the other knows.
How do you exploit that economic opportunity?