Privatized gains/socialized losses is a moral hazard, but it doesn't follow that it's in banks' interest for FDIC to fail.
E.g. if I borrow $1,000 from you to bet on a roulette table, you suffer the downside if I lose and can't pay you back, but it's still in my interest to win.
E.g. if I borrow $1,000 from you to bet on a roulette table, you suffer the downside if I lose and can't pay you back, but it's still in my interest to win.