I see the same happening with choices about other suppliers. The EU is a very large trading partner to the US and what is happening right now is unprecedented in the last 75 years or more. The damage to our future world order is incalculable and the fact that it all seems to be by design bothers me greatly.
The lyrics of Alan Parson's 'Children of the moon' have been spooking through my head lately.
Now that no more protection is offered, there's no point in spending the money.
But I think it was a pretty bad appeasement deal.
However the story might be different in a decade as sixth gen aircraft like Tempest are entering service and probably other modern technologies like unmanned/autonomous drones and hypersonic and directed energy weapons are more widely deployed. Connectivity between units in the field is also clearly a huge deal that is going to matter more and more and that is going to require a level of interoperability and trust that won't be kind to "partners" who aren't good team players.
On that kind of timescale I expect "buying American" will be much less attractive to most "allies" of the US than it has been for most of the past century and it will show exactly in decisions like who is making and buying whose planes.