So this says that - in stock market terms - the primary offering has been allotted. It seems to me nothing prevents person A who owns a /24 for example selling that subnet to person B at whatever price person B chooses to pay for it.
They say “They ain’t making any more real estate”. But real estate is bought and sold every day.
Potentially same thing here.
Then of course there is —— NAT. So in practical terms nothing really changes here.