I have understood the discussion to be in the domain of computer security not in "who has a bigger ... own nuclear weapons" or whatever. I can imagine that the

I have understood the discussion to be in the domain of computer security not in "who has a bigger ... own nuclear weapons" or whatever. I can imagine that the former would be technically doable, if there were enough political support (e.g. also to demand on the highest level from the U.S. companies to provide for the technical support to the project which would be managed from Europe for Europe). But yes, politically, I understand there wouldn't be much readiness, because of the long term established practice of depending on the U.S. "solutions" even in these aspects.