The government won’t replace things that work unless they have to.
In the 1990s, several people I knew got home desktop computers. After a while, they would complain about the slowness, etc. These were the old 8086 and 286 IBM-compatible types. I would tell them, 'that computer sitting on your desk at home is more powerful than the computers that put the first man on the moon.'
When I used the desktop TRS-80, Model II, it had 64k of ram. One of the mainframe computer guys told me he was jealous, because the mainframes only had 32k.
My current desktop has 12 Gb.