Well....to answer your question in the title....it will just die a slow death.
Oh no, not all at once, not at all. But like PalmOS, it will just fade into oblivion.
I was a former Palm addict. Began with the M100/IIIc and, ended with the Treo650.
I know the signs of a dying OS, as I've seen them before. I'd say 2 years from now, 90% percent of ppcgeeks will have moved on to SOMETHING, because they have to, just like I had to.
And just like I wasn't about to move to WebOS, alot of folks aren't gonna move to Windows Phone 7 either (as judged by this
poll), but that's another topic altogether, lol!
Just my opinion @ 1AM. Don't hang me, LOL