1: Bundling of Search... If I wanted to use bing (Zarquon forbid!), I'd have gone off, and gotten myself a Windows Phone. I would add something here to the note of iOS... But, Apple don't do search. And Chome has no less then Four other Providers for your searching pleasure.
All at the reach of a Fingertip from those Three Dots, at the upper right hand corner. Perhaps they should be faulted for not advertising this?
2. GAPPs a.k.a The other White elephant in the room. Why is it so hard to figure out that Android is otherwise Open Source, and YOU ARE NOT REQUIRED TO USE GAPPs... If you do not wish to? And, in point of fact must be manually installed post installation of any Custom ROM *cough* CyanogenMod *cough*, do to leagle copyright constraints. I dare say it isn't Google's fault that most people want GAPPs on their Devices. As its GAPPs that People want, and not necessarily Android itself.
3. The App Store(s).... Of all the Samsung Devices I've ever had over the years, these largely also came with their own Samsung App Store. In fact infamously so... Go read some of the reviews for Samsung Push Service. Which pretty much lives for its App Store. Ok that maybe one thing, since the OEMs can rest some control (for now), on what actually lands on the Device. (i.e. Bloatware, that can never just be simply uninstalled simply.) But, where the heck does Amazon, and Co. get off balling that Google won't let them flog, their competing 'App Stores' from with-in Google's own Playstore? I don't get this one. Not one bit. I don't walk into a Lidl, and think I'm shopping at Aldi, much less Tesco's. This is pure over reach by a mile.
Have I left anything out?