The real reason is of course
that a great deal of internet based technical innovation has been driven by grumble sites and advertisers.
Until the former changes, and the latter finds a way of merging data that it thinks it can glean from IPV4 addresses with IPV6 logs they wont change either.
The rest will come later.
I agree though that a lot of the change has been driven by individuals/groups rather than any kind of plan. Its difficult to see a revenue angle beyond Internet of Tat...