Are you sure you don't have the numbers reversed? Most estimates I've seen put the cost to pass for FIOS at $700 per home with a cost of 4K per paying customer.
My nose is wrinkling. If its $4K/sub, not per address, VZ would be foolish to quit; rents on the 30% take rate (premium buyers, immune to price), minus the union overhead, should be sufficiently attractive to continue expansion. While LTE will be a competitive threat, it won't affect the Fios set.
