Quite a lot of investment goes now to upgrading FTTC areas to FTTP or FTTC to G.Fast as the current Openreach business model just does not have an incentive to do anything to the areas expensive to upgrade. There is always a new technology or something else that directs the investment to non-EO areas.
You're not missing out on FTTP investment because you're on an EO line.
Costs to roll out FTTP to EO lines are similar to those on cabinet fed lines.
The copper is left as it is now, wether the line is connected to a cabinet or direct to the exchange.
An Exchange Only line in the middle of London is probably going to get FTTP before my 45Mb FTTC line in a small semi-rural town.
They should target those with the lowest speed
regardless of how the line is fed.
There's many lines with FTTC who get lower sync speeds than EO lines on ADSL.
There's also many cabinet fed lines with only ADSL who sync lower than shorter EO lines on ADSL.
I think the whole "nothing is done about EO lines" is nonsense.
The hundreds/thousands of infill cabinets and FTTC cabinets outside exchanges across the country shows they are making an effort to reach EO lines.
There's also all the FTTP that's been rolled out to such lines.