1 million is so much money actually mate, and that is something that only few can make in their entire life.
Some people won't make it at all in their entire lifetime.
Crazy, huh?

It seems that a gambler has loss this massive amount (1.4 million USD) playing a bet with an odds lower than 1.01! (exactly 1.008)
Try the same with horse racing, going against horses that can trade 1000 to 1 in the exchange (which is 1.001, less than 1.008) - you would find "losers" there as well, it could happen also in other type of sports and more. Unpredictable events are random - that's how gambling works, based on this randomality ... if you have an edge you can surely exploit it for much more than 1.008 - low odds are never a way to make money unless you created a secret formula somehow.
There is no justification that could make me go for an odd of 1.0008 with $1.4M, this is senseless to me, so unprofessional and nonmanagerial. Maybe the guy is under the influence of alcohol, which is one of what they use in physical casinos to make you act the way you can't naturally act. The surest game could end up in bitterness for people regardless of class, so it's not new.
Sportsbooks are even the best place to gain more often than casinos and using your head well when you have big money is the key. In this way, you will continue to make your cool money forever.