Phones and operating systems are not all alike; there is something for everyone and whether we like it or not the majority of the world uses an iPhone.
I travel frequently for my business and every time I am on a plane, just about everyone around me is using an iPhone. I rarely see anything other than iPhones and when I do I am surprised (and take note). On my last 2 trips I saw a Sammy S4 on one flight and a M8 on the other....that's it.
The gal next to me on my last flight asked me what phone I had, she had never heard of it (not surprising). Most people are not like us, they want simple and what everyone else is using. They do not care about RAM, IPS or Amoled, chipsets, GPU or CPU....etc. They want to turn it on, have it work, check Facebook, text, listen to music and take selfies. We are the huge minority, period.