PublicAnimalNo9 PublicAnimalNo9:
That's because these devices and machines are one shot deals where quality truly matters. If there was ANY sort of consumer component to this kind of equipment, you can bet your ass they'd be built to break down in a couple to a few years.
It used to be that consumer products were made to last indefinitely. For instance, my wife and I were given two identical irons for wedding presents 25 years ago. In all that time we've only used one of them. The other sits, new in the box, waiting for the first one to die.
Cars also come to mind. My wife's dad bought a 1965 Galaxie 500 brand new and gave it to us when we got married. We still have it.
Meanwhile we've been through several other vehicles as our 'primary' cars.
Also on the topic of cars it's not uncommom to see cars from the 1950's to the 1970's still in service and still on the road.
But try finding something from the 1980's and early 1990's on the road.
Ditto with the space equipment. The old stuff was built for the long haul. The new stuff...
not so much.