These kinds of things are everywhere. To pick one at random, if you want to list a product on amazon.com, there's no shortage of consulting companies that will figure out how to make it happen. And then you can get a consultant for your amazon advertising (the ads that go on amazon.com to advertise other products also on amazon.com) and a consultant to help make your company the default choice when a customer clicks the buy button in the "buy box," and a few more. You can easily spend hundreds of thousands on these consultants.

Honestly, the Amazon hustle is a crazy and fascinating little ecosystem in a bunch of ways.