It's already happening. It's not completed, and it will take time for publicly available services. At some point having IP4 on your public gateways will be see

It's already happening. It's not completed, and it will take time for publicly available services. At some point having IP4 on your public gateways will be seen like FAX in your office. You can't turn it off because a small minority is still using it. The importance is dwindling and at some point you will turn it off and nobody will notice.