For corporate networks, where you control what devices get onto non-guest VLANs/subnets, you'll have better control over devices that support this new functionality. See for example Google's work on removing IPv4 on corporate networks:

* https://www.youtube.com/watch?v=UTRsi6mbAWM

Even in organizations where IT cannot control devices, like universities which are largely student-BYOD, IPv6 take-up can reach 80%:

* https://www.youtube.com/watch?v=2B-liebzcOMmkm&t=10m

"Obviously" in what way?