MIB maybe, CIA, probably the best money can or cannot buy today.
When the industry is paying new grad 120-140k starting salary then 400k-600k when you are expert, and CIA maybe 90k starting and 120k when you are expert, you are NOT going to get 50 years ahead of the industry.
They probably mandate enough back doors so they can listen to and get into everyone's conversation and traffic, but that doesn't mean they are 50 YEARS AHEAD. Now if you consider world bank funding certain semiconductor giants 20B to build a new fab, yeah, that can make them about 5 years ahead of competition and an automatic 40% market share.
Now if you are talking about DIFFERENT technologies, then yes, government may do small run of GaAs on 4 inch wafers and manual process. One guy I used to work with had done government work before that would never be consumer scale, like keeping an obsoleted fab around just to make sure they can always make heat seeking sensors for missiles and chemical sensors for bio weapons. They are different, but not "50 years ahead" of civilian world.
Super Computer? Only government would need them now, civilian just go rent 50000 instances of virtual machines on the cloud, and turn them off when done. No need to wait and no need to buy, maintain, and waste all the idle capacity.