Who said something about uniqueness? I see nothing special about the Samsung Galaxy. Except that they can make and sell a lot of them, at a healthy margin, while others can't. Samsungs competitive advantage lies solely in manufacturing. They out-manufacture the competition, no matter how good or bad their software is. Vertical integration doesn't mean you always want to win on quality. Just that you are in control of the whole value chain. Google and Samsung work in the same business, making Android phones. But Samsung makes all the profit and Google is bleeding money into Motorola. Yes, Google should stop giving away Android for free. But they have already lost control over the development of the platform. Look what Amazon has made with Android. They stripped out all the Google services and integrated their own to make the Kindle Fire. Its like when IBM created the PC standard. Google lost Android.
Hmm - You again miss the point. You haven't explained how they "outmanufactrure" the competition - how do you measure this? If it is volume - that is an advantage that is easily overcome.
You state that Samsung is in control over the whole value chain - yet they don't. The don't manufacture or even design or own the processors, the glass, the batteries of the software.
You state Google has lost control over the development of Android - yet they are the only company providing the official release of Android - the next version just announced as Kit Kat. Aside from that simple fact -the OS is the small change in the equation - its the Apps - and whether its google mail, maps, drive, Google PLay, etc - that is owned and controlled by Google and cannot be used for free by Samsung. That is where the value is. Is Samsung decided to go on its own - what would it offer on top a dated free version of Android.
Unless Samsung has been investing in the software development of similar apps and the extensive infrastructure and support staff maintaining these services - they don't have anything. So it goes beyond just the OS and software but everything behind it. You raise Amazon as an example - yes they took a plain version of Android - but they had to invest a lot in the apps and the backend services (using their huge server capacity and data centers). It was not easy and not tied to manufacturing the kindle.
I grant your point that Samsung now enjoys the volume movement of phones -but that is not the result of them being vertically integrated. They are making a lot of money and have the gravity of the Android market today - but that could change. If they bailed on Android and went with Tizen and they could put all of Google's applications on there - would it continue to sell?