Oh for heaven's sake.
This ^
They really can't win.
I listened to Dido Harding from Talktalk cry for years that OpenReach didn't roll out enough full fibre.
They don't even sell it when they do roll it out.
For years they've complained about the lack of full fibre and lack of investment and now they're complaining about the way they are rolling it out.
Cityfibre was less than pleased when, after announcing their intention to cover the city of Coventry, Openreach came out and did the same
Oh boo hoo!
If you don't want anyone to over build in an area you are going to invest in then pick somewhere rural and see how that goes for build costs.
Of course OpenReach are also going to hand pick cities/urban/densely populated areas.
Everyone wants the best bang for their buck and will pick areas with the lowest install cost per premises past.
IMO the last thing the industry needs is OFCOM sticking their nose in and tightening regulations on where FTTP can and can't be rolled out.