This took about 5 years and almost 20 billion dollars, so that means total network overlay should be competed in another 8-10 years and be another 20-25 billion because Verizon left much of the hardest to upgrade lines for last. Though, I'm happy that more and more Comcast subscribers who have Verizon in their backyard laugh at their 250gb data cap and throttled docsis 3 modem offerings.
Assuming that Verizon doesn't sell off about 20-25% of their landline footprint.
Ah, well, that was the initial plan, but they've said since then that the NH/VT/ME sell-off was much more trouble than they'd expected, so the sell-offs are paused- still, I would expect more in the future, once the economy recovers to the point where you have investors popping up with more money than sense to buy the networks.