My guess would be that the "Surface" product line doesn't have one deciding visionary that knows and decides what to deploy in the market, that the teams buildi

My guess would be that the "Surface" product line doesn't have one deciding visionary that knows and decides what to deploy in the market, that the teams building these things follow. So instead of having a product line that hits each section with a device that makes sense, there is bunch of different devices that are OK, but doesn't make 100% sense for any of the segments, and the devices are overlapping a bunch.