In Austria not having IPV6 support is a feature, and I assume it's that way in many countries. If an ISP rolls out IPv6 for you here you lose your public IPv4 address (DS-Lite).
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.
Widespread carrier grade NAT is inevitable, because we simply have more people than IPv4 addresses.
Just because an ISP is rolling out CGN and IPv6 together doesn't imply that IPv6 is an anti-feature. It's certainly better to have CGNv4+IPv6 than CGNv4 alone.
Australia is under APNIC, which started rationing out its last /8 IP block in 2011.
Australia has a decent number of allocated addresses, around 2 per capita (compare with India, with 29 addresses per 1000 persons)[1], but presumably they will have to be reclaimed from existing users.
A newly started ISP in Australia could get a maximum of 2048 IPv4 addresses from APNIC. [2] If it needed more it would have to transfer them from another owner.
So if in your country some ISPs are too slow to roll out IPv6, may be they have plans worse.