Because they're both very well established technologies and there are tons of people with deep expertise in this area.
Space is full of kafkaesque levels of bureaucracy, it's shocking that we haven't been doing this for a long time.
It's the scale of these industries that he's taking on that is mind-boggling, not really the tech itself. It's operational exceptionalism more than anything.
I really wish more billionaires, govts and VCs poured money into serious hardware and manufacturing.
It really seems like US has lost its edge in manufacturing. 90% of the things in the mall/online seem to be from China.
The economy may be doing great today but really not a great sign of the future.