Everything is identical. The only additional thing an ISP usually needs to do is buy additional cable links and ensure they have enough backhaul capacity.
The reason Talk Talk and Sky didn't sell FTTP in the past is that supporting a new product would require a lot of changes to their back end systems and staff training. I assume they felt that the number of premises passed did not justify the development and training cost.
Edit: Another thing is they don't support FVA or VoIP. So this creates a further issue for new, FTTP only builds.
Edited by deleted (Fri 02-Feb-18 10:58:06)