The folks that use the term landline are out of touch. Cell phone hits the nearest tower. Wire from there. Home, business internet, phone, hi-cap. Wire, wire, wire.... Fiber or copper there is all the same maintenance and provisioning.
The country runs on the network. It’s just that simple. Sure there is competition but VZ still has an extensive profitable network with tens of millions of dedicated paying customers. The US government being one.
So if you mean traditional telephone service you’re right. The network has and is evolving and if you think VZ doesn’t want it.... Amazon, Google or Apple does.