When the time comes that it is not possible to allocate new IPv4 addresses, broadband service providers and router
manufacturers need to be ready. According to this Think Broadband report, it seems that those offering IPv6 are the niche providers.
“Mainstream operating systems such as Microsoft Windows and Apple’s OS X have supported IPv6 for some time now, and even companies like Google have been IPv6 enabled since 2008, but only a small number of broadband service providers and router manufacturers are ready. It seems that those offering IPv6 are the niche providers.”