I'd really hoped we'd have more support for IPv6 by now. It's funny, every so often there's a big "We need IPv6" push with lots of media coverage which is forgotten about shortly afterwards.
As far as I know there's only one ISP (Internode) here in Australia which offers IPv6.
There is some network effect in there and I've experienced it myself.
In a product we make, we can go the extra mile and start supporting IPv6 but the libraries we use, the rest of the echo system we play in, don't support it. So we feel like it would be wasted effort at best and it would break things at worst.
A good way we found to force others to configure and bother about IPv6 support is if we deliberately add extra and better features only tied to IPv6.
As far as I know there's only one ISP (Internode) here in Australia which offers IPv6.