BT is still at it!
Having worked in Telecoms competing against BT as the incumbent for much of my working life, this does not surprise me at all, but shows again that Ofcom has BT in its various guises running rings round it.
The regulatory Laissez Faire attitude is problematic for one major reason: You cannot reverse time.
So, if you wait and see whether some anticompetitive practice is damaging - the damage will be done. And this is death by a thousand cuts - I have lost count how many times something was argued not to be damaging at all - only for reality to catch up and prove the opposite.
We need a stronger regulator with a bit of foresight who will be able to identify these kinds of issues and then set/enforce equitable principles and rules for the benefit of the wider market.