[nightski]

The difference is that it is not a "standardized" OS interface. Rather it's a complex layer on top of operating systems offering dumbed down and less performant versions of what is available all of which is interfaced by a dynamic and not so performant language.

If it was something like a modern POSIX I don't think you'd have much complaining. But it's a lot heavier than that.

[pjmlp]

In the context of this thread it is enough to compare Web 3D capabilities and tooling, and how lacking they are when compared against with the native conterparts.