[codeglomeration]

He was referring to the fact that once you've made significant investments in a platform + applications + DRM content, it's not really straightforward to move to another platform, especially because you cannot transfer the content you already paid for.

Also let's not forget about early termination fees from carriers, or getting another subscription just to get another phone.

For some people moving to another platform can be a significant expense. And for most people it's not really clear what else you might be missing on the other platform, that you were accustomed to using now.