Just because you are paranoid, it does not mean that no one is out to get you!
Being anti-competitive is in BT's DNA as they have had decades of practice at it. They are so good at it now, I doubt they even realise they are doing it!
Having said that (and especially with KCOM on board as a partnet) then that BT chap is right that there should have been no surprises - their price list is after all public data and it should have been expected that BT Infinity would move in.
Trying to start up an "open access" network when they have no (local) experience of being an ISP, and presumably no retail offering themselves, will not be easy in the best of times. I suspect that unless they can offer something fundamentally different, that cannot be replicated over BT's network (which I guess is not possible since I seem to remember that this is basically FTTC) then they will have major problems interesting other ISPs to use their network.
My best suggestion for them would be to try and interest smaller (more niche) and ideally more local ISPs to support the project. Mind you, whether the cost structure would allow sufficient margin for such ISPs is another matter.
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