Wireless doesn't need to be to an existing wireless connection. A lease line could be run to a building in the village and then the wireless built out from there.

You may also find that they will part fund satellite to make it more affordable - but it isn't an ideal solution even if it was cheaper due to the vast distances between you and the satellite.

If they went the mobile route then they could install additional masts in the area to boost coverage and speed.

Any of these are possible and only doing a full costing would show how it would compare to the FTTC/FTTP solutions.

Agreed but once you talk about installing a lease line then that dramatically increases the infrastructure costs for the wireless provider. This has to be recouped and requires a greater initial sign up to make it viable. I am not ignoring wireless as a solution and its clearly better than satellite, however If you are going to have to pay for lease line in order to get wireless to work then you may as well put the money into extending FTTC. People are fickle and despite moaning about poor speeds probably won't want the additional cost of installing a wireless antenna on the roof and drop to the router, when previously they just plugged something in to their phone line which already exists. After a while when their neighbour says they can now stream iPlayer or films from Netflix then they then start to consider upgrading.
The mobile route in my opinion is a no go as this would probably reverse a commercial decision on behalf of Mobile Phone operators. We had excellent reception from T-Mobile when they merged with Orange as there is a transmitter tower within the village. When EE took over and the bid for the 4g spectrum they rationalised (closed down) a lot of their masts to save money. The mast in the village was one of those shut down. There were numerous complaints to T-Mobile/Orange/EE but they deny it but have supplied nearly all customers with a boost box connected to their ADSL!! As with satellite broadband Mobile Broadband is very expensive in comparison with ADSL or FTTC and until the Mobile Phone operators come up with an unlimited tariff at a reasonable cost then 4g is only suitable for the occasional download and not for streaming.
John