As soon as Samsung transitions from Android to Tizen, Android is going to quickly lose market share momentum. Hopefully Samsung will be able to get out from under Google and Android's thumb. With Samsung selling so many devices using Android, a shift to Tizen would have to slow Android's rapid growth of smartphone and tablet market share. In another year, we'll see how little influence Android has without Samsung practically carrying it. Samsung is Android's most influential hardware partner. I think Wall Street is going to be in for a rude awakening relatively soon.
I just saw Tizen for the first time. It looks so readable and functional, in short, a serious product like iOS6. A sharp contrast to iOS7.
Unless iOS8 copies from Tizen, at least to give you an option for it to look and feel like iOS6/Tizen, then Apple should prepare to drop a notch or more in next year Fortune 500 rankings. Not all of Apple customers are kids.