Now I'm imagining a plumber who fixes a drain, then stands up a "fix drain as a service" website where people can put their credit cards in and their drain gets fixed remotely at effectively zero marginal cost to the plumber.

(And then, of course, the plumber gets VC money to expand the business and the drain fix becomes a drain fix subscription, and if you cancel or your credit card expires all your drains instantly block back up again.)