And I think this is what Cook was saying. People went to buy a smartphone thinking they'd have the same apps/functions/etc as the iPhone if they bought any smartphone, then found that their Android phone didn't do/use the specific thing that all their friends on iPhones could do/use.
To say that Tim Cook was saying people went to intentionally buy an iPhone, but accidentally bought an Android phone is disingenuous. You know what he meant. And if you don't, you have a serious English comprehension issue.
Now, whether cellular providers' sales people fobbed Android phones off on customers who were actually looking for an iPhone is another story.
You can imagine the scenario:
"I'd like an iPhone."
"That's $399, then."
"What?! That's a lot!"
"Well, we have these (Android) phones, and they're only $39.95."
"Is that an iPhone?"
"No, but it does all the same things."
"Oh. And only $39.95? Okay. I'll take it."
A few months later they've discovered that iPhone only app that all their friends rave about doesn't run on Android. Oops.