Keep in mind that Stars is licensed and regulated in the Isle of Man, not Alderney, and as such is subject to very different requirements. Segregation of player funds was mandatory for them, whereas it was just optional for Full Tilt.
So while it's obviously impossible to know for sure, I'd be very surprised if it ever turned out that they didn't have enough cash on hand to pay out every single one of their players around the world.
Pre-BF, would you not have been surprised to learn that Full Tilt wouldn't be able to pay back every single one of their players? They were the 2nd biggest
poker site with just tons of money rolling in, and regulated by an authority (Alderney) which many had previously trusted.
The point is that we know little about how tight the regulations of Isle of Man / Alderney / Kahnawake really are until the shit hits the fan and we learn about all the things that the regulators do NOT check on.
pokerstars, while obviously maintaining much better business practices than Full Tilt, was still engaged in illegal money transfer practices in order to keep their US-based player pool and that is something which a tight regulator probably wouldn't allow.
All this said, if I still had access to my
bankroll I would be playing at PokerStars right now. Though we can't really ever know how strong Isle of Man regulations truly are, PokerStars by reputation has been the most trustworthy internet poker room for the past several years and their ability to pay their US customers back in spite of the DOJ hold on their funds certainly means they have been running a profitable and sustainable business.
One thing about PokerStars though -- has anyone heard reports of PokerStars crediting play accounts for deposits which have not actually gone through like Full Tilt did? I know most poker sites will do this as they want to earn rake on your play as quickly as possible and will settle with the money processors later, but did PokerStars lose any money by bad money processors the way Full Tilt did?