Demand may be the driver, but the transmission is broken. There's zoning, and environmental regulations, and NIMBY opposition, and on and on.
I mean, how's Heathrow's new runway coming? The demand is clearly there, but the runway is not. It received the support of the government clear back in 2009. After much back and forth, it's ready for a final decision this winter, with the earliest possible year of operation being 2025. And that's with the demand being clearly there.
