What difference would it make to have Tivo over Ethernet rather than coaxial cable? Forgive my ignorance.

---------- Post added at 08:41 ---------- Previous post was at 08:25 ----------
I wonder if Virgin Media are going to increase there availability by cabling more areas? My brother in law lives in a village, and half who live on the East side of the M11 get BT INTERNET, the West side do not. Because BT who are rich beyond hades say it would cost too much. Cabling is so expensive, and difficult in some areas. Sky have the advantage of not needing cables. This must be offset by the incredible cost in launching a satellite. Virgin would have a huge market share if they expanded, they are definitely best by far. I heard that the cabling would not be economical in the future.