It's a matter of both and that's where nuance gets into play... Is McDonald's the only place people can eat a burger because they purchased a McDonald's produc

It's a matter of both and that's where nuance gets into play... Is McDonald's the only place people can eat a burger because they purchased a McDonald's product and are now tied to their ecosystem? No. Is Apple's App Store the only place people can purchase apps for their products that they also purchased from Apple? That smells a bit fishier. Context, nuance, etc. are important, that's where analogies fail because almost every analogy is broken at some level, it's an abstraction and not reality.