Re: White mice running round a wheel
Yes and no.
Yes, there are still many Market 1 exchanges, that means, as you say, you can only buy your internet service supplied via BT's core network.
But that does NOT mean you have to buy it from BT.
You still have the choice of which ISP you go to for your retail service.
You can't magically get CN21 or FTTC where the exchange only offers CN20 that way.
But you do choose how your bandwidth is managed, packaged, and supported that way. And you also get to move your phone line away from BT if you want to - that can save you a small fortune. :)
Buying a "resold" BT circuit cuts BT's *retail* operation out of the loop, sales, and support. Yes, your traffic still needs to run over BT's core network and yes, any fault in that network will still affect you as well as all your neighbours, but you can get better service in all other regards.