See, the thing is that SE and NJOY are claiming that their products are tobacco products, not that electronic cigarettes are. As far as I understand it, this isn't going to be a blanket issue, it's going to be on a case-by-case basis. So let's say that SE wins the case and the judge allows them to sell their product without FDA approval, that doesn't necessarily give Ruyan (for instance) carte blanche to go ahead and sell theirs.
I could be wrong about this, but I think that it's like coming out with a new Tylenol. Let's say that I wanted to start making acetomenophen tablets and selling them in drugstores. I'm pretty sure that, even though the exact same product is already in stores, I would need FDA approval for my specific product. That process would probably be a lot simpler than for some whole new molecule, but I would still have to go through it.
Can someone confirm my understanding?