Even if you were to roll your own cable in the ground to your own ONT/OLT/BNG at some point you will need to acquire IP transit or peering from other commercial entities.

> OLT = Optical Line Terminal.

> In ISP fiber (typically GPON/EPON) infrastructure, it’s the provider-side device at the central office/headend that terminates and controls the passive optical network: it connects upstream into the ISP’s aggregation/core network and downstream via fiber (through splitters) to many customers’ ONTs/ONUs, handling PON line control, provisioning, QoS, and traffic aggregation.