"A sound banker, alas, is not one who foresees danger and avoids it, but one who, when he is ruined, is ruined in a conventional and orthodox way along with his fellows, so that no one can really blame him"
The worst part is that very poor diversification / groupthink is exactly what creates financial bubbles and financial crises. We seem to be reaching that uncomfortable too-big-to-fail scale in computing / cyber security.
Other shoe will not drop because the liability for mishandling customer/user data is minimal. I don't expect a scenario where Microsoft (of even Microsoft's cloud division) folds after this. Bear Stearns actually collapsed after their fuckups.