Samsung is really serious about Tizen. They're porting their Android applications to it like mad. It could be a way out of Android for them.
Except that 2013 isnt 2012 and not just for the obvious reasons(time).
In 2012 you only really had Samsung that could stand up to Apple in terms of quality. Some people will contest this but no, you're just wrong. Results don't lie.
Only Samsung could match Apple for sales. Everyone else in the Android space was far behind.
In 2013 we have the re-emergance of Sony and HTC and LG is now also back on track.
Asus and Acer are both gearing up and they have the know-how to do a good phone.
If Samsung goes with Tizen there's plenty of people more than willing to offer people phones as good or better than the Galaxy series.
Android isn't as reliant on Samsung as it was, say, even half a year ago. If Samsung says "we quit Android" you won't have any panic anymore because people know there are a ton of good options.
And with Tizen, Samsung would go down the Apple route, only with being superlate to everything.
It's an open secret that developers for Tizen have been extremely standoffish, to the extent that some people are even pronouncing Tizen "dead"(which forced Intel, one of the major backers of the platform, to rush out and deny the rumors).
And according to a recent developer survey both Firefox and the (now, sadly, unlikely) Ubuntu OS had higher interest despite starting from a much smaller base.
Here's the survey
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