I've written here and elsewhere about the fact that Samsung is increasingly the dominant global Android OEM. Samsung has ridden the Android wave to huge profits and near-global domination of the smartphone market. However the company is ambivalent about Android.
As Benedict Evans points out Samsung isn't promoting the Android brand and doesn't really mention Android in its multi-billion dollar "Next Big Thing" marketing campaign. Accordingly Evans contends that Samsung's Galaxy brand has greater recognition than Android itself. This conclusion is based on Google Trends search data, which may or may not be accurate as a reflection of actual brand recognition or demand.
There's plenty of other evidence in the market to support Evans' argument, however, including the above Android OEM comparison chart from ad network Millennial Media. Another data set from AppBrian also supports the same conclusion:
With the possible exception of Huawei all the other Android OEMs are in decline (re market share) including and especially HTC, which is shifting its strategy to focus on emerging markets because it can no longer compete effectively in North America and Europe.
What happens when Samsung so totally dominates the Android landscape that it can start using that leverage against Google or creating its own "forked" version of Android independent of Google (as Amazon has done with Kindle Fire)? That's presumably why Google is working on the "X-phone" through Motorola -- to try and create a viable rival to the Galaxy. But will Google be willing to go toe-to-toe with "partner" Samsung in terms of marketing dollars?
No is the short answer. Samsung reportedly spends roughly $12 billion annually on marketing its mobile devices. That fact alone makes it hard for any other Android OEM, even Google-Motorola, to compete. Only Apple is really in a position to compete with Samsung.