alt Hacker News> they make no money from cash buys because of that economic perversion.
This is completely false. This might be surprising to learn, but for normal car dealerships (not buy-here, pay-here or used car dealerships) a huge amount of their compensation rides on receiving holdback payments from manufacturers, as well as per-unit bonuses that often have cliffs.
Cash buyers paying invoice price are welcomed (if they aren't too big of a headache) because they push a dealership over or at least closer to the next sales-volume bonus cliff.
Holdback alone is worth more than any realistic origination fee.
What I heard is that they make no profit. I'm sure they'll make revenue, but if they simply sold all cars at the cash price, they will be losing money, especially dealerships. But if you're certain they do make profit, not just revenue, then you sound like you know more about the industry than myself, so I'll concede that point.