On the contrary, it ties in neatly with platforms & programming models that can't just rely on being able to summon up an OS thread at will, but have to self-sc

On the contrary, it ties in neatly with platforms & programming models that can't just rely on being able to summon up an OS thread at will, but have to self-schedule over a small number of owned threads. In just about every event-loop-driven, there exists an implementation of Rx (or something like that anyway)