Starlink internet is not meant to replace hard line internet. There is no getting around the physics of cable being so much cheaper/easier. Even terrestrial cell towers are more efficient and cheaper than satellites. This is 100% meant to supplement existing infrastructure not to replace it. You will almost always get cheaper and faster internet (for both you and the company providing internet) over a cable to your h…
You can multiplex wavelengths for wireless just like cable right? Granted you'd need to buy the licenses for those frequencies, which should be fairly cheap in rural areas.
I don't think Elon would approve this project if cable is always cheaper and easier.