FTTC is, like many things, a triumph of technology over the cost of Doing Things Properly:
VDSL is pretty clever stuff, squeezing improbable amounts of bandwidth out of 19th century twisted-pair technology. Fibre to the premises would likely have happened in the 1980s, if it weren't for Thatcher.
Clever bodges to do things on the cheap.... how 21st century do you want?