Because the Tube PPP contracts specify that he, and only he, act as arbitrator of any disputes between the contractors and the Tube. Not the institution of the Rail Regulator, which in any case has been abolished - Mr Bolt personally.
It's been a while. Did they ever lose touch with him? What colour was his hair when he answered the call? I can imagine Department for Transport civil servants looking on park benches and in squats in Dalston, scrutinising all the Facebook pages ending in Bolt, placing advertisements in provincial newspapers. What if they hadn't been able to trace him? Would his next-of-kin have inherited the heavy responsibility - the DfT Director, Railways descending on an otherwise harmless citizen, like some Sicilian matriarch in a grey suit bringing news that the vendetta is now up to you?
Or is the process less brutally secular? Perhaps a Bolt will simply emerge, like the next Dalai Lama.
Of course, Bolt's role is deeply mythic. Alone, the Bolt continues to guard the sacred wisdom of the Railtrack years, wandering in the wilderness. One day, he will return to judge Tube Lines' trespasses, or rather not:
Chris Bolt felt it was important to reiterate that the increased cost of the contract was not based on the failures of Tube Lines so far, but on a natural increase in the theoretical cost of the upgrade work.The faith cannot err; it can only be betrayed.
Even Boris Johnson has repented of rail privatisation.
It is time to bring an end to this demented system.
Actually, he's only recanted - I see no sign of repentance from the man who accused Stephen Byers of being as bad as Robert Mugabe, not once but twice, in order to defend Railtrack after the corpses had piled up.