There are a handful of companies you don’t want to mess with, and one of them is Apple (NASDAQ:AAPL). The tech giant has serious clout these days, and its support or endorsement could mean the world for struggling startups and new technology. Unfortunately for many, though, Apple doesn’t exactly give out its approval liberally, and in fact, it has no problem handing out the opposite. Developers behind Bitcoin, the digital currency, learned that lesson the hard way recently as they faced several rejections from Apple, and questioned why the Cupertino, California-based company seemed to have it out for them.