Open question and for discussion:
The fastest widely available package via Openreach is sold as 76Mb and capped at 80Mb downstream.
The fastest widely available package via Virgin Media is sold as 300Mb and capped at 330Mb.
Can anyone remember when the gap between them was ever this wide?
I can remember the various iterations of the products and things like Virgin Media selling tiers at twice the speed or even a little more than those available through Openreach-based products but I can't recall quadruple the speed before.
Correction welcome, discussion welcome.
Clearly this isn't considered a priority by Openreach to address, so it seems reasonable to presume that their customers and, in turn, those of Wholesale, don't see it as a priority.
Those really interested in delivering higher speeds are building their own networks where they can.
Those who offer higher quality services at higher prices likely don't want the kind of user base for whom 76Mb VDSL 2 doesn't cut it. They'd charge heavily for it regardless.
Most of the rest are I suspect the ones who see broadband as a value add or are budget suppliers. They are likely more worried about how cheaply they can sell something remotely competitive than being on the bleeding edge.
Certainly two of Openreach's three largest customers fall into the last category, one being budget the other using broadband as a value add for TV, as do much of BT Wholesale's base.
Those who really want higher speeds and are prepared to pay for them are clearly a tiny minority of the end user base not really worth catering to for the most part.