Or it comes to mind that he was managing other people's money, and wanted to earn quick commissions by betting on a reliable outcome.
Anyway, this should be a great lesson for those with gambling problems.
I dont think he/she collected this money from other peoples because the amount is 1.4 million usd its not a joke. Of course he/she is professional gamblers otherwise no one will take such a big risky decision to profit 11k$ against 1.4 million dollars. Newbies will never bet with such big amount without understand gambling.
In this concern the amount of money is big but it is not important. When a gambler gambles, he often make some mistakes. One of the few things to pay attention controlling greed in gambling is one of them. There are some gamblers who are only interested in betting on those betting odds 0.001 to win. They think that betting on those bets is safe and profitable. As a result they fall into a kind of greed and fail once after repeated wins and lose both their previous gains and the capital as well. So a gambler should control himself in such betting odds.