And where exactly is Coca-Cola going these days?
You know they're still going to be around tomorrow, and the day after that, and the day after that. They're practically guaranteed to exist until the end of time because their product is a standard for which other products are often judged against.
I'm not saying that Protools is fantastic. However you can pretty much be guaranteed that Avid isn't going to drop it any time soon. And they're certainly not going to "overhaul" it just for the sake of changing stuff that works fine today.
Some other DAWs, like Logic, are totally up in the air. There are no signs of Logic X and nobody knows what it's going to be when it does drop- it could be the equivalent of a digital atomic bomb going off like FCPX was. And guaranteed Apple will drop support for Logic 9 the moment X hits. Nobody knows if their ADDA converters will still work with Logic X, or what MIDI hardware they might magically stop supporting, or what plugins they're going to drop, or even if their Logic 7/Logic 8 projects will open in it.
But you can be rest assured that, when Mac OS X 10.9 comes out, Logic 9 probably won't run on it, and Logic X will be your only upgrade path, and who the hell knows what is going on with that.
My point here is that you don't deal with crap like that when you're working with Protools. A lot of people buy into that stuff for stability, reliability, and support.
-SC