I'm sure there's hurdles to overcome before it's a reality. Even if it's limited capacity, I think we're ready for gesture-based computing and I think Microsoft's closer to making that a reality than anyone else.
This mindset of "build the OS, the apps will come" is no longer valid anymore, not when competitors like Google, Amazon and Apple are building out destinations and ecosystems, selling consumers on direct apps and tools rather than platforms that promise... especially, in Microsoft's case, when those promises have failed to pan out repeatedly in prior years.