None of these has displaced Microsoft or Google. I honestly do not see how combining aspects of all of these and pressing the fact that it is XML based over and over again is going to make XIOS any more successful than any of its more well considered antecedents.
What incentive is there, really, for developers to build on what I see as more or less just a curiosity? The fact that it is XML based doesn’t really mean much in terms of reducing learning curve. And speculating about developers generating revenue directly for themselves via subscriptions or ads doesn’t do anything for me either. Maybe it is Information Week’s editorial bias, but I didn’t see any compelling evidence of why this would be an improvement for application users over any of the current approaches.