Bloomberg is not only the mayor. He's also a billionaire with massive sway in the city's media, finance and cultural institutions. Moreover, the Big Apple is a Hieronymus Bosch hellscape for landlords and developers. Rent control, historic preservation, zoning, environmental impact, community protests, union delays -- not to mention plain old red tape and corruption -- offer enough tools to stop any project before it starts (Heck, ground zero is still a gaping hole, and everyone has wanted that land to be developed, fast).