You started by saying the problem was too much fragmentation and that Google was providing leadership. Now you seem to be saying nobody had to listen anyone and Google is a force all their own. ie. more fragmentation and a new behemoth in the hardware market.Does not really matter what Samsung thinks, that ship has sailed, unless Samsung thinks they can do what Microsoft, Blackberry, and Nokia Tried and failed to do.
Which it will remain, partners can do what they want, they are not being forced to do anything.
How so? they have 3 real options, stop making phones, make their own OS, or license iOS.
Not much they are able to do besides filing a lawsuit against Google which would be more or less pointless.
That "nothing they can do but deal with it" attitude is not what these OEMs signed up for in adopting Android. Saying it doesn't matter what your lead customer thinks is foolish. OEMs are are almost certainly discussing the fact that they aren't being forced to do anything more than their current license agreements require yet.
Blackberry failed because iOS ate their lunch as a closed architecture. Does Google care enough about this space to win it? Microsoft failed because Android already filled the open architecture slot on mobiles, there wasn't need for another. If Google shakes confidence in Android's open future, do you think OEMs won't reconsider that decision? Samsung has the resources to get a Linux build out on mobile hardware with a workable UI in 5 years or less. Can Google get to the market share they need to in that time to maintain their business model?
I'm not saying it's all going to fall apart, but tensions are certainly ratcheting up and it's naive to think these companies are looking at billions of dollars of business and thinking "well, that ship has sailed..."