Which can become a hassle if things go wrong.
Arrived at a large airport, and they had no car (due to large amount of flight cancellations the day before). I recognized the problem quickly, before that insight trickled down the line - and hopped to an almost empty line at a bigger name and was fine.
Getting an obvious refund of the prepaid amount from Expedia (I think), or the national “brand”, became a two weeks struggle because everyone kept pointing to the local franchisee not responding!