Interesting. Though what that implies is that Microsoft might end up doing something other than what they started on, leaving someone else to dominate a market they once dominated.
Like how people don't buy mainframes anymore. IBM is just another player in the server market and they sold their desktop unit and Macs switched to Intel. Now they make CPUs for consoles where taking over from Intel and MIPs chips.
Similarly I could see Microsoft losing dominance in Operating Systems as more things become web-based. They move more towards web services and Xbox - which is already happening to an extent.