There is at least one comment here that mentions CGNAT and how it enables IPv4 to continue to exist. CGNAT breaks the end-to-end principle of the Internet and

There is at least one comment here that mentions CGNAT and how it enables IPv4 to continue to exist. CGNAT breaks the end-to-end principle of the Internet and 100% forces you to depend on centralized services, because you will absolutely not be able to receive unsolicited traffic on your IP without coordination/permission from your ISP or other various third parties. Yes, there are NAT bypass methods-but those methods all rely at least in some situations on an external server that relays connection requests. Many people really don't care if the Internet becomes the next cable TV along with business tunneling services and 2 or 3 social networks and would really be fine with that. If you don't want this to be the only choice in the future, you should start learning, using, and demanding IPv6 and really stop putting NAT on a pedestal and bitching about the long addresses. When I set up IPv6 on my home network, I took some time and learned how to get it working with DNS, and now I don't have to type long addresses any more. I have an actual separate IPv6 subnet for guest network. It's pretty cool.