Would be an interesting idea, especially if connected directly to his Starlink network of satellites.
Alas, that's not how Starlink works. The client devices (phone, tablet, computer) do not communicate -directly- with the satellites. If you think about it, there's no way a phone can produce enough radio signal strength to make it to a satellite.
Starlink operates with a powered "ground transceiver" (sort of a sat-tv dish and electronics), which provides the link between the client device and the satellite.
What this means is if you use Starlink as your internet service provider, you are limited to a small radius around your ground transceiver. That's fine for your residence or business, but useless as soon as you get into your car or take a long walk.
“Would be an interesting idea, especially if connected directly to his Starlink network of satellites.”
Even better, since Starlink isn’t cellular. If he could invent a reasonably priced satellite phone network and devices, that might be something to think about. He already has a good start with the infrastructure in the sky.
The cellular providers are so arrogant and believe they’re the only option for communicating. I’d love to see them brought to their knees with legitimate competition.