[anonymfus]

Here in Russia many (most?) consumer providers have IPv4-only carrier grade NATs and sell public addresses with additional monthly fees. This happened gradually: when providers run out of addresses they had not fast enough routers for DS Lite, but after transition to NATs they got incentive to keep additional revenues from people who pay for public addresses.

So if in your country some ISPs are too slow to roll out IPv6, may be they have plans worse.