There's no reason why it couldn't be replicated, but it isn't - at least, not in any way with broad traction. It's not useful to compare something that could e

There's no reason why it couldn't be replicated, but it isn't - at least, not in any way with broad traction. It's not useful to compare something that could exist but doesn't with something that not only exists but is universal in its ecosystem. That universality is a feature in itself.