As a fan of android I say do what you need to do (to Samsung). I knew Samsung was going to want to adopt their own software and get away from the Android ecosystem eventually. With that said I think it will be awhile (3-5 years) before Samsung will be able to move completely away from Android. For one they have this legal mess they are dealing with Apple and right now they are getting help from Google, as soon as this is all said and done Samsung will be thankful for the help and move on. But they have to ask can they really put out an operating system that can compete with Apple and Android. It took Google 6 years to finally overtake Apple (Android 1.0 released in 2007) and even then it is like they are only a step ahead as one little stumble and Apple is back in the lead. Microsoft, whose pc operating system mops the floor with Apple in sales, is having a hard time getting their mobile operating system on the same level as Android and iOS. It is clear that it takes time to get people to warm up to a new operating system and going through the learning curve and bugs until the os is perfected. There have been many days where I threatened to go to iOS after a poor update or device only to finally see android mature to an operating system that I am truly satisfied with.
As far as a device standpoint I feel like everything goes through cycles. Based on the s5 reviews the Samsung luster has already worn off on some people as the consensus is hold on to what you have.
So do you see the public following Samsung and adopting Tizen?
Do you see a manufacturer in the future stepping up and taking the top spot from Samsung?