And yes, the negative side is that every time something goes wrong, BT really can't fix it any faster, it's all down to OpenReach to maintain the network. But on the other hand, it always goes through OpenReach, whether you are with TalkTalk, BT or Sky, so the entity responsible for maintaing the network isn't the entity selling you broadband for home.
Thus, the two companies extracted an exorbitant rent for the formerly public goods they controlled. The fact that some of this rent went to inefficiencies of running two separate companies on an illusionary arm's length basis does not really improve matters.
https://www.openreach.com/about-us/our-leadership-and-govern...
https://www.bt.com/about/bt/our-company/group-governance/boa...
Openreach
Mike McTighe Chairman
Clive Selley CEO
Matt Davies Chief Finance Officer
Edward Astle Non-executive Board member
Liz Benison Non-executive Board member
Andrew Barron Non-executive Board member
Jon Furmston Secretary to the board
Simon Lowth BT Group nominee
BT
Jan du Plessis Chairman
Philip Jansen Chief Executive
Simon Lowth Group Chief Financial Officer
Adel Al-Saleh Non-independent, non-executive director
Sir Ian Cheshire Independent non-executive director
Iain Conn Senior independent director and independent non-executive director
Isabel Hudson Independent non-executive director
Mike Inglis Independent non-executive director
Matthew Key Independent non-executive director
Allison Kirkby Independent non-executive director
Leena Nair Independent non-executive director
Sara Weller Independent non-executive director
Rachel Canham Company Secretary & General Counsel, Governance