> For example, if some of your customers need a pubic IPv4 address [..]
I don't see how this has anything to do with wired vs wireless.
There are far fewer people who have a contract that specifies that they will get a public IPv4 address on mobile.
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.
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.