But they do understand it...you are paying more because of it's intrinsic and aesthetic value. You are not buying it as a tool, you are buying it as jewelry.
Are you buying your phone as a tool or as jewelry?
List ALL the things this Nexus 5 phone does that my iPhone does not do.
I already did that for you in another thread, but I can do so again.
1)
Application interoperability - aka the Share menu (allowing you to share media from any app to any other app without the OS having to specifically support it)
2) A desktop to arrange icons or widgets as you see fit, rather than having them spammed at you all at once.
3) A real file system so you can manually move files around if you want.
4) The ability to use any market you want in addition to the official one (or even in place of it) and the ability to load any app manually, without needing to root.
5) No restricted media - The ability to circumvent OS censorship due to #4 (if you want flappy birds, you can still have it on Android, even if Google takes it off their market)
6) 3rd party app integration...you can use any app as the default for anything
7) Wireless/Remote app install (can install any app to any device on your account, remotely, using only your Gmail account on aq PC)
The actual lost is a lot longer but is not stuff you will care about (Widgets, live wallpapers, better notifications, ect)
You've already decided what is important to you. I'm not going to change your mind on what you like.
GTalk (hangouts) does that now. It is not even platform-specific.