My company has a /32 ipv6 space. That's 79228162514264337593543950336 /128s. And we got it by... just asking for it.
I know everyone's shouting about "there are enough IPs for every atom on earth!" but just like "no one understood that over half of all humans would be on the internet", maybe we'll need more IPs in the future becuase of some unforeseen development... it seems silly to be handing out blocks like this just for giggles.
There was an article about this recently on the German news site Heise: https://heise.de/-4196981
Translation: https://translate.google.com/translate?sl=auto&tl=en&js=y&pr...
Hence, there were no fees. Stop engaging in pointless (and even incorrect!) sophistry.
The National Science Foundation paid Network Solutions a payment, per registered domain, in exchange for the service of registering it.
So you got a /8 by asking for one; they handed them out for free.
Same goes for DNS. You used to request the name and it was yours. No yearly fees.
The IP blocks were never reclaimed because it was pointless. Even now clawing back the big /8 assignments only kicks the can down the road for a year, maybe two.