Very true, but each manufacturer's context is different. You look at what Porsche dealers have been able to wring out of their GT cars from an ADM perspective, and it's clear that their demand is exponentially higher than others. And don't get me started on Ferrari where they all but spit at you when you walk through their doors if you haven't purchased at least a handful of cars from them. On the other extreme is McLaren. These cars sit, they are regularly heavily discounted and maintenance/repair work after warranty is essentially a money pit.
Long winded way of saying, there's always a reason as to why some marquees command a premium, while others don't. I truly believe Lotus puts out an incredible product, but the brand recognition is not there. Then, every time they get a win (i.e., they convert a Porsche or some other owner to Lotus), they all but destroy the experience via the dealership network. There are some dealers that are good, but most are average at best and don't realize that the "other Marquee" owner they just got, inherently has a higher bar that they hold the dealer to (because it's what they are use to).