That depends, do you see PT Barnum as a 'lying weasel' or the most successful entrepreneur of his age?
You and I might know that there is never enough bandwidth... but try explaining to an accountant, stock analyst or other such ROI-based thinker that they should spend a few billion on an international, built from the ground up, communications network. It is a hard sale...
However, get Mr Crowe to float an article in Wired magazine about what it would take to deliver a retina-resolution immersive environment to tens of millions of users and BANG, Level3 was the darling of its era (and still alive today at 1% of it peak stock value)
So there you go, the planet's biggest, baddest network was funded on PT Barnum-like premises... Was that a bad thing? Do you like leasing 10GB Ethernet links for the same cost of a T3 under ATT's reign? Could a bad-ass engineer in a white shirt, clip-on tie and pocket protector have done a better job of it?
So yeah, we definitely need the PT Barnums, in my mind the issue is communicating to BOTH sides that they really do need each other