The UAE want's to be a high tech haven. They want to get into the aerospace industry. They don't want to support their country with a McDonalds franchise. They've looked at their options and they've decided where they want to be in 20 years. They don't want to be running Applebees in the USA. If you'd taken the time to learn a little about the UAE, you'd already know this. It's not some nefarious plot against America.
there are plenty of US tech companies with zero security or defense related connections, that the UAE is free to buy. plenty of them.
To make money!!!!!!!!