Multi - Room TV Connections

We watch terrestrial TV & satellite TV (English, German & Italian - from 3 satellites, requiring 3 LNBs all set up & working on our dish) all on our one TV.

We are having a ground floor extension built. It is our intention to be able to watch both the terrestrial & satellite TV in the sitting room, in the kitchen & in the spare room.

It is our intention that the TV in the sitting room will be wall mounted & that the TV in the kitchen will be ceiling mounted, in both cases to save room.

It is our intention that all 3 TVs (of differing sizes) will have internet access.

We do not really want to have to have 2 separate co-axial cables to each TV (one for terrestrial TV & one for satellite TV) plus cat 5 or 6 cabling to each TV.

I appreciate that I may avoid the cat 5/cat 6 cabling by having Wi-Fi dongles in each of the TVs?

However, how can I avoid having 2 co-axial cables to each TV?

I have read about the HDBase T extender (which I note featured again at this year's CES - albeit at a ridiculous price) but it has been around now for several years & is clearly not taking off.

Surely there is a simple solution to this as so many people have TVs in different rooms around their houses?

We do not have & have no intention of subscribing to cable TV or to Sky.