Branding
If there was a requirement on all suppliers to use FTTC or FTTH as part of the product name it would be a lot clearer. e.g. Openreach FTTH Broadband.
Likewise for cable. I'm on that and it says ultrafast, ultra-reliable fibre powered by DOCSIS® 3 technology. The cable to the home is coax however I know the fibre bit of this is just around the street corner in a cabinet.
Biting the hand that feeds IT
