I mean, making simulations of what you're going to build is tremendously useful if you can get feedback from them that will tell you where you've gone wrong and what you can do about it.
My only failure was the restaurant in Myrtle Beach. I kept it open for four years. It was in a tourist town, it was only busy four and half, five months of the year. But the bills kept coming all year.
There is an underlying, fundamental reliance on the Internet, which continues to grow in the number of users, country penetration and both fixed and wireless broadband access.