It's also a successful business in that their growth plans could potentially deliver real value and economies of scale (talking purely hypothetically here). There's a very big difference between a startup which is profitable but would be far more valuable if it could grow using investments, a startup which is premised on economies of scale and so which fails if it can't grow fast enough to take off from its runway, and a startup like Theranos where the tech did not and probably could never work regardless of how many customers it had.
Even if We would fail for lack of further investments (because it's type #2), that doesn't mean it was #3, a Theranos. In both #1 and #2, Softbank has a lot of leverage over Adam, and in both it's kind of a game of chicken: neither Softbank nor Adam want to see lack of cash cause We either permanently curtail its potential (#1) or die (#2).
