BN (and any other business) will stay open as long as they have the cash on hand to operate. When they run out of cash, and can no longer find somebody to load them cash, then they close.
The problem is that, apart from BN's top bigshots, and the guys who--astonishingly--continue to loan them money, nobody really knows when this is going to happen.
The smart thing to do is to get out there and look for another job; not only may you land in a place that's, you know, actually stable, but you can get out of the toxic workplace wasteland that BN stores are becoming.