It seems, after all this time, Microsoft is looking to leverage its Flight Simulator engine to cover, well, everything. Falcon 3.0 took a run at this sort of thing way back in the mid-90s, and the result went exactly nowhere. In fact, the resultant sim was so buggy it almost literally took a decade to get right.
Microsoft is of course a bit richer than your garden variety game developer, and this is after all more than ten years later. We'll see...