In five to ten years time they will be finacially weaker. You cannot steal from Ford of Europe forever. You don't have to "bring back" Panther (which includes Crown Vic and Town Car) and Ranger, but to just put the market up for grabs and possibly (most likely) lose 150,000+ sales a year is insanity. IF YOU READ THE ARTICLE, Ford at least acknowledged that THEY DON'T WANT TO DO THAT AGAIN. But, it will be a phase in and eventual cramming of the european version down the throats. So like GM will probably eat up a good portion of those 150,000+ sales a year there is another great chance to nibble or take a bite out of E-series sales.
Fleet sales may not be highly profitable but they bring down the factors of production to make other cars/trucks more profitable. It would be A LOT EASIER AND CHEAPER to support 3.7/ECOBOOST 3.7/5.0/6.2 production if these engines were also utilized in the production Ford walked away from. Either it would have made Mustang/f-150 cheaper to the buyer or more profitable.