Not very interesting. There are "over 9000" of them.
Verizon is the big one.
That they use IPv6 for their wireless division just makes it more ridiculous that they don't for their wired division - they clearly have the institutional knowledge to make it work.
So it is better to see it as a completely different project. The core routing IPv6 is the same, but that tends to be the easy part.
I don't see how this has anything to do with wired vs wireless.
On wired, just about every business account is assumed to have a public address and often a static one. In addition, a lot of gaming doesn't work behind carrier grade NAT.
In the mobile world, this expectation of public (or even static) IPv4 addresses is almost completely absent.