Most industries are supported externally. One I am familiar with in Australia has done studies which show for each individual job inhouse there are four externally.
You brought up silicon valley then revert to two individual companies that are principally involved in the aerospace industries.
Silicon Valley is a region in the southern part of the San Francisco Bay Area inNorthern Californiathat serves as aglobal center for high technology, innovation, and social media. It corresponds roughly to the geographicalSanta Clara Valley, although its boundaries have increased in recent decades.Sep 4 2019