What are the reasons for an ISP to do IPv6? People still can go to Google with IPv4, so no reason there.
Not enough people will change provider over this, so no incentive there.
They are now able to ask extra money for a fixed IP address, because IP addresses are scarce, even though this would mean that you can't get an IP address instead of not getting a fixed one.
They would need to invest and that is never a nice thing to do.
They need to replace a lot of hardware or at least reconfigure it and that will cost money.
Also an extra layer that can fail, so extra cost.
In all this I do not really see a reason for a provider to move to IPv6, besides the 'It is a cool thing to do' type of thing. As a business I would also be against it.
I hope I am wrong and somebody can tell me a lot of advantages that would make them money, save them money or a combination of both.