Devices maybe, software won't :-\ (We're going to see ever-diminishing pockets of IPv4 around for a loooong time, much like we still see pockets of Cobol.)

pick a lane?

The trend on that graph is slowing, and when we reach criticl mass on the number of mobile devices the graph will be flat.

There is no chance we will be at 95% usage in 5 years or so.

If you like, we can make a wager?