If you are so confident that it was bone-headed to not foresee this - did you take a short position against these companies in Q4 2021? If not, why? You would have made an absolute fortune placing trades against these public companies.

Here's a different way to look at it - a whole lot of people started using DD that would have never tried it during lockdowns. If those users liked the experience and convenience, then they'd stuck with it. DoorDash bet that a lot more people would stick around than actually did. DD was wrong, but I would argue that it wasn't a dumb bet given the stickiness of their product, and their excellence in execution up until that point.