It is extremely likely based on your point above that their investor meetings have gone completely nuts. There has to be so many funds offered at the door right now its ridiculous, people trying very hard to get in. Doordash isn't profitable, it runs off of investor funds on a future return. It honestly could stay free because it's an infinite flow of data coming into their coffers.

Sam Altman is on record saying "We have a soft promise to our investors that one day when we create AGI or something close to it we will ask it to help us monetize and pay investors back".