Samsung do not take the time to get the features right, they implement half baked ones (at least from my experience when I owned the S4). Samsungs problem is customer experience, just go on their Facebook page and you will see lots of people complaining. Their other problem is Touchwiz and the lack of updates. Personally I much prefer iPhone, it's a lot more reliable and features inside it work. As for what features to implement that is a matter of what people want, and Apple will never be able to please everyone 100% of the time, people are free to move away from the Apple brand if they are not happy with what Apple is doing. People will of course vote with their wallets, the iPhone 6S was a success as was the 6 and 6 Plus befofe it, and I have a feeling the iPhone 7 and 7 Plus will be a success.
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I never mentioned copying, but Touch ID is much better on the iPhone (for example). And your reference to wireless charging I'm afraid I can't agree, Apple already hold a patent where it would charge a device (presumably the iPhone) from up to 15 feet away.
http://www.patentlyapple.com/patent...ster-details-of-wireless-charging-system.html