So you're saying Maximus built the 10th Anniversary bumper for FCA? I didn't know that, but it is what came on my Hard Rock and what I put on my JT because the steel bumper was blocked out from ordering when I placed the order.
I don't know that I would slag FCA too heavily, they have done a better job of giving the consumer what they want to buy than any other manufacturer in the North American market across the board on road and off. Ford is playing catch up doing the best they can to knock off the Wrangler without getting sued, GM hasn't even tried, Toyota apparently has not yet retired 10 year old R&D costs yet because their stuff is unchanged/unimproved for quite some time now.
In reality all of them are in cost competitive markets, and none of them manufacture a significant quantity of components in house. Wheels are always outsourced just like frames, differentials and myriad sub-components, so I really wouldn't expect them to be burning the midnight oil creating one off prototypes for a concept vehicle when off the shelf stuff will do what they need it to do (which is look good on splash pages and stimulate conversation)