"A friend gets emails of photos of his DGC. He doesn't like the way the photos arrive with a pervert's roadmap showing the exact street (even building) where that photo was taken."
Geotagging of photographs is not a product of iOS7, so it's not clear what point you're making. It's been present for ages on GPS-equipped iPhones and since iOS 3, I think (so for practical purposes "every iPhone other than those bought in tiny quantities by the earliest of early adopters") and has been present in non-GPS equipped devices, via Skyhook and other location databases, since iOS4. I've not looked, but it's possible that the way it's displayed has changed; GPS tagging in EXIF metadata has been around for at least five years.
Mature businesses need repeat custom so they would be well advised not to sell us expensive gadgets and then mess with the operating system on the assumption we can't walk away.
Yes, Blackberry have done very well with that model, as have Microsoft's phone business. People who bought Blackberry stock at the peak are currently being offered 6% of what they paid and around two thirds of the staff have lost their jobs over the last twelve months, but they have indeed taken account of the claimed needs of their existing user base. And as Steve Ballmer said, "There's no chance that the iPhone is going to get any significant market share. No chance. It's a $500 subsidized item. They may make a lot of money. But if you actually take a look at the 1.3 billion phones that get sold, I'd prefer to have our software in 60% or 70% or 80% of them, than I would to have 2% or 3%, which is what Apple might get." Have Microsoft got their software in 60% of the phone market? It would appear not.
A minuscule number of existing Apple punters will go and get Android phones in response, and a homeopathic dilution of Apple users will go to whatever Windows Mobile is called this week. Given the criticism of iOS7 is mostly "it's too much like Android", "it's too brightly coloured and hard edged like Windows phones" and "it's different to iOS6" then it's not quite clear what, beyond spite, they'll gain from this move, but they will exist. But the impact of Apple of that would be approximately zero.