We all know Ram was separated from Dodge for that reason - so Dodge could die without taking the trucks down with it. It wasn't for accounting, marketing, or styling reasons.Why didn't GM invest in Pontiac, Oldsmobile, Saturn? Why didn't Ford invest in Mercury? Buick is becoming more and more Chinese. SM couldn't kill Chrysler and Dodge just because he was a foreigner and didn't want to look bad in the eyes of the Americans. GM and Ford had no such problems.
No, why "kill" brands when you can just watch them wither away until no one misses them when they are cancelled. Or create his "dream merger" where someone else can be blamed for killing the brands.