Popular centralized services (name servers, certain web servers) will want to stick with IPv4 for a long time. They need to support customers who cannot or wil

Popular centralized services (name servers, certain web servers) will want to stick with IPv4 for a long time. They need to support customers who cannot or will not upgrade their clients. Edge services (ISP customers, file sharing) can easily move to IPv6 as soon as their ISPs come to their senses.