The following is my observation that I wrote elsewhere a while ago. I don't know how accurate it is as I've gleaned this just from talking to a few salesmen, but this is the info I have.
One of the biggest issues IMO for Scion was not just the pricing, not just the cars, but HOW the cars were sold. Basically a Scion gets built and sent to the U.S. as a total base model. Then it sits at port for something like a max of 90 days. In those 90 days, dealers can put in a request for the car and then the customer (or dealer) desired options are added on at port. So if you want a car with the upgraded infotainment and premium wheels, that gets added at port and shipped to your dealer. The problem is that the cars sell so slowly that they just eventually get sent to dealers in random configurations that can't be changed easily due to monroney label laws. so dealers end up with a bunch of strange stock that they can't discount due to "pure pricing", the customers don't buy them, and the cars rot away. It's bad for everyone.