If people need a product, they will find it. If they want to know about more products they might find useful, they will inform themselves — hopefully using a neutral source whose interests are aligned with theirs. Not from an advertiser which is interested in making them buy whatever garbage their customer wants to sell. Which does not educate and inform customers, enabling to make good decisions, but to manipulate them.
At the beginning the money comes from the product owner, who without any visibility will not have (as many) costumers