Do a control-f for "DOD". These guys have so much IP4 space its not even funny. Being the government, they'll never give it up. So a total of 200 million IP4 addresses:
So, when the country that starts the internet is also the country with the largest, by far, military and has obscene military spending, well, this is what happens.
Back before the commercialization of the Internet these things were relatively free.