The story sounds hard to believe but with the level of wastage and high wagering that gamblers get involved in it is possible wagergwr such an amount because 1.4 million dollars is considered to be a small amount to some whale gamblers.
I don't think 1.4 million dollars will be considered small by any whale anywhere, except the person is stupid and does not know the value of money.
Even 1.4 million dollars is a big money to Elon musk, like I've said before, it is clearly evident that the gambler who wagered this amount was not expecting to loss it, he probably felt he found a good game to make a good profit of $11,000 from and went all in since he believe it was a sure win for him, but unfortunately, things didn't go as he planned, which resulted to him losing this money to the casino, really a big loss and each time I come across this thread, I hope in my heart that who ever this gambler is, is still doing OK right now.