You must excuse me, I explained myself badly. Of course I didn't mean the classic private subnets :-) (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16).
Surely IPV6 will be the future, but apart from the change there is still no global coordination for this, and even here the responsible entities are not moving.
PS: I can't wait to have to remember a 128-bit address that adds letters to the whole thing :-P