Why are tv aerials ugly?

The team at Moonlight have taken a winter break so not muct to comment on. We installed a tv aerial on No.2 it is ugly, no I know that i can install a aerial on the roof of the big shed, run a cable that will split the signal to service each house that is good news and removal of a ugly object sitting some 2 metres above the roof that gave me a shock when I saw it.

So if in a car aerial have been removed and built into the windows of a car, why has the technology not been developed for a house?