It's really a matter of the size of the walled garden. You could call the entire earth a walled garden if you want. If the walled garden is big enough, people

It's really a matter of the size of the walled garden. You could call the entire earth a walled garden if you want. If the walled garden is big enough, people are okay with it. For the majority of apple customers, the app store is plenty big enough. Apple customers are like those animals in the safari sized zoos where they can run around and feel free enough to not care so much about the fences keeping them in.