Just because there is a large competitor, you do not quit. Apple didn't and came from behind several times. Now if it is not profitable, let it go, but don't just give up and give it all to App/Goog(le) without a fight. Besides, 1% of a lot of people is still a lot of people.
You've totally been taken in by Samsung.
Tizen was never meant to ship. Tizen is a threat weapon that Samsung cranks up each time Google thinks of asserting some authority
over Android. Its simply a boogie man waiting in the wings in case Samsung doesn't get its way. It doesn't have to be viable, or even
cost effective. All they have to do is trot it out and demonstrate something, ANYTHING once in a while.
As long as Google plays along, Tizen will never launch.