The US also profited an exceptional amount from selling arms & software to Europe, far more than the US was spending on military aid to Europe, which was largely contingent on trust and friendly terms.

Over a decade or so the US is on course to lose far more than it's saving with these changing politics.

Europe wasn't giving anything away for free.

Europe will lose trillions trying to catch up from zero. Especially with a dwindling, aging population. Over decades you'll see.