Something maybe missed is the rate of technology progression. It has gone exponential. China already has its own windows 10 alternative, already rolled out as standard in machines destined for the Chinese market.
Android is still open source, dare we say it, as long as Microsoft don’t get nobbled to pull the plug on Github in another “Cut off own nose to spite face” move.
Just two years ago, mocap in a phone in less than ten years was unthinkable. We can no longer sensibly use past development timescales to try to predict those of the future.