I don’t think it’s the Pentagon’s decision anymore. GE (Government Electric) is part of the White House now.
They can always slip a few billion in unmarked bills over to GE in the form of cash subsidies for GE Wind or some R&D into camel-dung turbines or something. It’s not like Immelt cares about killing a few more American jobs.
Even the Marine variant, with its STO/VL equipment, was to share around 60% of components with the other models.
Making the F-35 with two different engines kind of defeats the purpose, doesn't it?
GE can do without the Pentagon now - Immelt will make sure they share ALL their technology with China - in the name of creating ‘jobs’, of course. China has a stealth bomber to get flying after all, and there are all manner of nuclear plants to build for them - not that China’s in any sort of arms race against the USA or anything.