Company profit can simply be withdrawn as a dividend by the shareholders. Gox may be sitting on zero or negative money.
Doesnt really matter. Even if gox were close to insolvency somehow, say its hot wallet got raided and it would have no reserves beyond that, which seems utterly unbelievable, even then its (by now, stinking rich) shareholders would be bonkers not to supply it with fresh dollars/coins. $250K revenue a day to run a few servers and pay what, less than 10 staff? Only a complete idiot would let that go bankrupt.