I have yet to use ipv6 and I will try to make it to my grave without adopting it.
I'm in a moderate-to-high technology area in the grand scheme. They laid fiber here roughly two years ago, and lit it about a year ago, whereupon I immediately subscribed.
They don't offer IPv6. At all. That should tell you just how unimportant IPv6 is perceived as outside of its core cadre of proponents. Note that this is not a commentary on how important it actually is; just on perception.
In short, nobody cares.
https://www.google.com/intl/en/ipv6/statistics.html#tab=per-...
Cloudflare reports slightly lower 40% IPv6 adoption globally https://radar.cloudflare.com/adoption-and-usage
A lot of the holdouts on IPv4-only traffic are corporate traffic. A lot of corporate traffic acts like it wants a separate internet anyway, and a lot of companies hoarded IPv4 spaces for long enough that they don't see the increasing costs of IPv4 addresses hit their bottom lines yet enough to care. It's a fascinating dynamic. Maybe corporations will just buy the remaining IPv4 internet entirely and keep it as their own separate but not equal network.
Ip version is not a selling point, unless you are on the server.
This was a few years ago, but the majority of Danish ISP wasn't offering IPv6, because "there's is no demand from customers". Well, the customers also aren't demanding IPv4, they are demanding internet access. How you deliver it is not interesting to anyone but a small niche segment of the market. If you could somehow make it work over IPX, then 95% of customers would be fine with that, it's not something they care about.