This is something that's always boggles my mind as an American.
Why would any other country rely on us for military equipment instead of working on their own? Yeah it costs money to setup, but even in highschool I knew enough to know the US has, to put it lightly, done shady shit to its allies. Hell, it's own people.
Why would anyone trust that they'll always be an ally? Especially when Republicans are in charge and make international cooperation even more of a joke than usual.
I want the EU to be self sufficient not because I think they suck and should be paying out the ass, like the magats do, but because when the US government decides they don't want to play with the other kids anymore, they can't take the proverbial ball home with them.
I am aware of the massive setup costs, and exactly 0 of what you said invalidates anything I said.