Just my opinion, but I think part of the issue is that American cars are not considered "bespoke" brands like Lexus, Range Rover, Mercedes, Audi, etc. but GM is charging just as much as the foreign brands. I just looked at Cadillac's website, and an Escalade V costs an eye-watering $150k. For that amount, I would buy an Audi RSQ8.
I'm sure their vehicles are nice, but Cadillac doesn't have the panache it had back in the day. And very few of their divisions have sedans to compete with the Germans, Japanese and Koreans. They have already lost Oldsmobile, Pontiac and Saturn due to poor product planning. I would not be surprised to see them fold completely. Sad times indeed.
https://www.cadillac.com/home?s_tnt=565152:1:0&adobe_mc_sdid=SDID=37403D41ED33F4AC-479C977537B52245|MCORGID=757A02BE532B22BA0A490D4C@AdobeOrg|TS=1659149754