Does it? Various user-blaming shenanigans, when Apple messes up their HW design can serve as an example. "You're holding it wrong", "You're putting the phone in your pocket", "You're using keyboard wrong in a real world with dust and stuff", etc.
Nothing prevent Microsoft to sells Windows Home/Pro as beta version of Enterprise and gets money & free QA.
If you pays money nothing guarantee your personal data will be used too.
You can of course sniff your network traffic to see what does get collected, and that way you at least know what they collected and you can imagine how it can be used and abused.
I don't see why they can't make some extra by making you the product as well.
Also, people who are into Apple are known to be willing to pay for stuff. A very lucrative group for everyone.
And if it leaked, Apple would be in very deep doo-doo with easily the largest class action the company has ever been hit with. It would be an unacceptable risk to even contemplate such a stupid idea. All for what, a few extra pennies?