Yeah, I'm aware of what the sales figures are... That doesn't mean anything locally... National sales numbers still break down into small percentages of any given community.
And, in my community, we generally really don't care about "new" and "latest and greatest". We look at what works, does the job, and what we like.
As for reading / scanning e-mails, all e-mail companies are guilty of that, including Apple:
I was very involved in Apple's Support discussions years ago as a sideline in my business. I spent hours a day helping Apple customers on the Apple Support Forums to resolve their problems, help them find solutions, and providing general support.
One topic that came up frequently, was Apple's invasion of privacy. And, in typical Apple fashion, any discussion that didn't favor Apple in a positive light was deleted. But, it was a frequent issue that Apple customers brought up.
But, since Apple quashed all of those, there are a couple of recent references available on the matter:
http://macdailynews.com/2014/03/23/apple-yahoo-and-google-also-claim-right-to-read-user-emails/
https://www.macrumors.com/2014/03/21/apple-email-terms/
Naturally, Apple would have no way of "knowing" that a particular message might be important to "(c) detect, prevent or otherwise address security, fraud or technical issues; or (d) protect the rights, property or safety of Apple, its users, a third party, or the public " without first processing those emails to some degree as they came through their system.