Because BT Wholesale charge more where there is no LLU. That's what Market A is. This is also why Plusnet deals on ADSLx are rarely available on Market A exchanges.
As for users haggling and having to keep moving, most don't. Even retention deals are becoming much less generous.
Edit. As Ian says but I forgot. It's Ofcom force BTW to charge more, for the reason he gives. To encourage LLU suppliers to install their kit, as the Market category does not change immediately when they do. It changes occasionally, as in has only done so two or three times since LLU came along.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk.
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Edited by RobertoS (Tue 31-Jan-17 08:30:41)