Well,
- 1°) the US isn’t the only provider of high-tech goods,
- 2°) US tech isn’t automatically the best either (hence the interest for the current multinational projects,)and
- 3°)in those fields where the US tech is indeed better, not using it anymore will force the competition to bridge the gap.
The move to block the Eurofighter sale sounds more like a turf war than a call for responsible arms deals.
Umm did you read the criminal investigation where the Saudis were paid off and made threats about not being able to stop terrorism in the UK?
PS- The US does make the best fighter jets. Period.