Often the most well funded projects are the first to stop when something like this happens. They are financially sound and they can afford to be conservative and wait and see what happens before starting to build a course.
I saw this in 2001 -- our best-funded clients sat on their hands and waited to see how it would shake out, while the underfunded clients who could scrape the money together to start, did.
However, if the latter type of clients are looking for any sort of debt financing to make it happen, I think they can forget it for a couple of years.