DoorDash is a public company headquartered in San Francisco. The commission it takes on a Herriman empanada order is not spent in Herriman. It goes to shareholders, engineers and offices a thousand miles from the fryer.
The money you hand us directly does not travel. It buys flour and cheese and beef. It pays the people who came in at five in the morning to make the dough. It covers the rent on a unit in a Utah strip mall. It gets spent again, locally, within days.
That is the entire argument. It is not complicated.