How do you know the gambler didn’t use risk management
I know it is unlikely (but not impossible!) that this person has many millions or even billions of dollars and this loss represent just a small % of their fortune
Regardless of the cause (gambling addiction, being reckless..), that gambler took a huge risk and he lost, that's it.
I can agree with what you say, but maybe he is a billionaire and then losing 1.4 million is peanuts for him. Money management is indeed crucial but far from easy also. It just also shows that there are no real sure bets and that it is never a good idea to bet on such low odds.