id assume those unchanging ipv4 addresses are not shared and natted with other customs and thus charging for them makes sense as you're consuming a limited resource they are paying for.
That's not the same for not changing an ipv6 address
That's not the same for not changing an ipv6 address
Over the last several decades of me having residential Internet service from a variety of ISPs here in the US, I've never had an IPv4 address that was not globally-accessible. Relatedly, I've never had a guaranteed-static IPv4 address, but I COULD get one if I paid the ISP additional money.
I understand that in other regions of the world NOT being behind CGN is not guaranteed.
> That's not the same for not changing an ipv6 address
Hopefully you now understand the context in which I made my remarks. In the world that I (and many other folks) live in, I get one globally-accessible, but definitely-not-static IPv4 address.