Well, what do you mean by Nothing? If you mean the absence of anything, including laws, it’s difficult to see how we can reason from that basis.
It seems to reason in the way you describe we’d have to at least presuppose a discrete state, some sort of progression of states (i.e. time), and some reason why the universe must follow the law that uniform states are unstable.
Or, another point: in the palm of my hand right now is an infinity of Nothing. Why doesn’t any of it become a Big Bang?