Comment by apparent

This is like the argument that Amazon has a monopoly, but it's actually even weaker. Doordash is just picking stuff up from local vendors that buyers could visit themselves, whereas Amazon is shipping people things from all over the world.

Amazon has been pretty successful in arguing that Walmart, Nordstrom, and everything in between are their competitors, and I expect that DD and IC will have no trouble doing the same (especially under this administration).