F5 was a load balancer for a video game. In that article about financial concerns of pot growers in Colorado a few months back there were two people moving into services and out of growing.

And some restaurants switch to wholesaling and distributing their more noteworthy products and either close the restaurant or hand it over to somebody else to manage.

When you used to be the customer for your new product you have access to a wealth of insights about what could make the product work. If you are better at that than your old product, well...