well, things like paying the guy who invented a major component of the computer chip $1 for his invention when you are a major defense corporation like sprague electric might have something to do with it

i met mr lehovec when i was a kid

'"The integrated circuit, as we conceived and developed it at Fairchild Semiconductor in 1959, accomplishes the separation and interconnection of transistors and other circuit elements electrically rather than physically. The separation is accomplished by introducing pn diodes, or rectifiers, which allow current to flow in only one direction. The technique was patented by Kurt Lehovec at the Sprague Electric Company".'

https://bit.ly/38fqO7B