I hope all Android OEMs are fully aware that Google has tricked them all into a race to the bottom. That's pretty much been Google's strategy against all its competitors to date.
There was essentially no Google Android tablet market before the Nexus 7, only the Amazon & Nook forks. Manufacturers will be happier having a market with no margin, than no market at all.
Android OEMs were never really in the race. They all tried, for sure, but they all fell flat on their faces. At this point, I think it is fair to say that the only competitors in the space are Apple and companies that view tablets as a portal to their real business (Amazon/B&N/Google).