The increased wait time also degrades capacity permanently. There was an essay by a truck driver posted here yesterday[1].

MMy understanding: many truck drivers are owner-operators, operating on extremely slim margins at the best of times (say 5 pickups per day).

With long waits and maybe one or two pickups per day, they go out of business.

1. https://news.ycombinator.com/item?id=29022124