What if Samsung would not have rejected the proposal of Rubin, you can never say with certainty. However, it is clear that Android’s success is based, among other things, to the fact that Google provides the operating system for all manufacturers, license-free.
With Samsung as a buyer would be Android landed probably only on the in-house Smartphones. Whether or not Google would then, however, today is so dominant, is questionable. Although it had been prior to the purchase of Android’s great success as a search engine. Such an important place in the Smartphone world, would have been without the ruby OS, however, is difficult.