It didn't happen much earlier because the Microsoft languages team is very deliberate and careful about rolling out new features. They have to be. There are som

It didn't happen much earlier because the Microsoft languages team is very deliberate and careful about rolling out new features. They have to be. There are something like 1.5 billion machines running some sort of Windows, and (I don't know) on the order of 1/2 - 1 million developers who work with MS languages and tools. Lots of backward compatibility to think about. At this scale even five 9s quality ends up breaking things.