Failure, in business, doesn’t necessarily let you know who your friends are, but it does help a company learn what it’s made of and who its supporters are, which is along the same vein as what Rowling is talking about. When a company is on the brink of failure, only the most dedicated employees and devoted customers/clients stick around. Everyone else abandons ship, and what you’re left with is an organization that’s lean and ready to take on the next big thing with a team of people that’s committed to making success a reality. I think that’s a great thing about failure in the business world, and probably the silver lining to our current economic “crisis.”