You might be able to reinterpret this through the lens of the old saying about how, during a gold rush, the people who "made shovels" made most of the money while a few miners got all the press.
We don't usually hear about the folks making provisions or shovels. If you dig into Seattle history, you may learn about how early Seattle was financed in part by providing raw materials after San Francisco's fires (apparently parts of downtown Seattle are fill dirt used as ballast for empty lumber barges traveling back from SF), but things got really interesting after the Seattle Fire. The reconstruction was financed in part from being a jumping off point for the Yukon Goldrush. Most colorfully, by a particularly successful Madame (as in brothel). If you're not a local, you'd never hear and probably never care about such things.
The supply of people who want to go on an adventure is far more reliable than the supply of profitable outcomes for those adventures. Most salesmanship is already about selling a story, not a product, and there are few stories sexier than an adventure you haven't taken yet.
The checks clear whether the customer is batshit insane or on to something great (in which case, you played a small part in that and might benefit from having done so).