I disagree with your assessment. "ready for gesture-based computing" indicates more than just public acceptance (which is likely there) - it requires the hardware power and capacity, form factor, and killer-app software use cases.
This mindset of "build the OS, the apps will come" is no longer valid anymore, not when competitors like Google, Amazon and Apple are building out destinations and ecosystems, selling consumers on direct apps and tools rather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.
This mindset of "build the OS, the apps will come" is no longer valid anymore, not when competitors like Google, Amazon and Apple are building out destinations and ecosystems, selling consumers on direct apps and tools rather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.