Well even if the tenants don't want Fios service, Verizon should still be permitted to replace the Copper with Fiber. Saying they are putting Fiber in the building does not compel the tenant to purchase fios service. LEC service can still be provisioned over fiber. The difference is that where that fiber gets into the CO, the phone is sent over the PSTN. If they had Fios Voice that call would stay on VOIP as long as it could only going to PSTN where it had to, like to connect with a local number not on VOIP or not a Cellphone.