Orbital D2D is (almost) useless.
sebastianbarros.substack.com
June 23, 2026, 1:44 p.m.
When a consumer installs a satellite dish on a roof, they establish a pristine, uncompromised line of sight to the sky using an active phased-array antenna with massive gain (30+ dBi). That architecture scales. Direct-to-Device does not. When you remove the dedicated roof dish and attempt to close that same 500 km link with an unmodified smartphone, you are forced to rely on an isotropic, omnidirectional antenna yielding roughly 0 dBi of gain and operating at a fraction of a watt of transmit power.Despite the massive satellite apertures currently being deployed to brute-force the uplink, the laws of physics remain unforgiving. Orbital D2D cannot provide meaningful concurrent sector capacity, cannot provide low latency, and, due to a microscopic penetration margin, absolutely cannot provide indoor coverage.Orbital D2D is more like an insurance policy. It is a brilliant, necessary solution for the 0.0001% of edge cases like the stranded hiker, the mid-ocean SOS, and extreme remote telemetry. But for Telcos tasked with delivering gigabits of data to dense urban and suburban populations, where 80% of data is consumed indoors, orbital D2D is practically useless as a core capacity layer.