People work and go into business and otherwise partner with people who can capriciously screw them over all the time, that's how businesses work. You can put a certain amount of things in contracts and internal procedures but ultimately you need to trust your partners/boss/employees not to screw you over. The App Store is no different and many people build their businesses around it because it is a huge market and Apple has built up a lot of trust that mistakes (presumably like this) are corrected and AFAIK they do not go around wantonly destroying people's businesses.