sbiddle:
With copper it's simple as it's a single MPF exists between the cabinet/exchange and the customer. With fibre passive equipment such as splitters in the field it makes a 3rd party deployment of GPON gear much more complex, and with the very different network architectures between the different LFCs it also adds to that.
Yup, copper wasn't particularly easy either. Had its own challenges (Multizone MDF's, Comsic frames, cabnets, SLES/SLU etc).