The PA's payroll is so bloated that the cost of wages alone exceeds all revenues.
In short, everyone who is anyone works (or worked) for the government. That isn't exactly a recipe for a people to pull itself up by its collective bootstraps. "Palestine" is, to be sure, an interesting social experiment so long as you're not one of the lab rats. It's a little tough to be a real human being trying to live in the laboratory, whether Israeli or otherwise.
"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." - Manuel II Palelologus