This is complete and utter nonsense.
Openreach pivoted to FTTP when they were structurally separated due to Ofcom pressure and the needs and priorities of the new entity diverged from that of BT Group. It had absolutely nothing to do with alt-nets, who are minnows in comparison to Openreach's network.
Your point doesn't even make sense, Openreach are putting FTTP into rural communities that were previously only served due to BDUK, there are no alt-nets to pressure them. If what you are saying was true, they'd still be rolling out G.Fast in these places.
I actually think your comment is utter nonsense. Ofcom did push them to separate but at the end of the day Openreach is still part part of BT Group PLC. "The needs and priorities of the new entity diverged from that of BT Group" => indeed this has happened but this wasn't because Openreach wanted to spent billions of pounds to have a nice new shinny fibre network, it was because they now really felt the pressure of the Altnets and there was commercial sense in doing it! Openreach changed their strategy because they had no choice. If they would have persisted with the G.Fast rollout it would have made them the second player for sure.
And your comment about Altnets "are minnows in comparison to Openreach's network" coudn't be further from the truth. Have a look at
thinkbroadband labs, which show validated fibre coverage, currently showing:
Alt Net FTTP:
FTTP excluding Openreach, KCOM and Virgin Media RFOG 37.56%
Openreach/KCom FTTP: 48.63%
Virgin Media Cable: 54.70%
Full Fibre (FTTP or FTTH): 71.28%
Clearly Altnets are not minnows but the second largest fibre network, getting closer to VM's network cable size. And in fact if you look at the overall Full Fibre FTTP (71.28%) the Altnets cover more than half of that (see
this post for more details). Of course Openreach (>30 Mbps) is 93.96% so on that basis we could say that when Openreach finishes upgrading most of their lines to fibre they will be much bigger on a FTTP basis. But it's clear the Altnets are here to stay and will most likely consolidate and became not only the third national network but I believe they will overtake VM to become the second largest network eventually. Openreach G.fast is only 4.74% and diminishing and VDSL is not fit for purpose unless you are next to the cabinet so Openreach's only choice was to move to FTTP or let the Altnets eat their lunch.
Openreach are losing >500k customers when they adding 4m FTTP lines a year, how many more would they would have lost if they didn't migrate 1m FTTP lines a year? I think you either like BT or Openreach too much...