There is clearly a debate going on in this thread regarding whether or not we are running out of address space/whether or not we need truly globally routeable IPs, etc. Assuming that we do need to go the IPv6 route, for a second...
I wouldn't really expect any businesses to go the way of IPv6 unless there was some kind of 1) Financial benefit, or 2) A law that required them to do so. Otherwise, there is really no reason to spend any time/money on it (Even if it is negligible). I can't find the source, but I believe at one point (maybe still) the Japanese govt. was providing cash incentives (tax benefits, etc.) for businesses to go the IPv6 route.
I wouldn't really expect any businesses to go the way of IPv6 unless there was some kind of 1) Financial benefit, or 2) A law that required them to do so. Otherwise, there is really no reason to spend any time/money on it (Even if it is negligible). I can't find the source, but I believe at one point (maybe still) the Japanese govt. was providing cash incentives (tax benefits, etc.) for businesses to go the IPv6 route.