Re: it's gambling.
I occasionally wondered about just that. What's to stop the CEO of a 'too big to fail' bank from going to the casino and betting the bank's float on 23 red? If it works, the CEO made a masterful investment and gets a bonus. If it loses, the bank gets a government bail-out (and the CEO probably gets a bonus anyhow for their skills in negotiating with the government).
Heads I win. Tails you lose.