Actually, Greed is not only the cause of losses in the gambling it is the cause of every problem in every where for example I can say also the trading where people were also goes by depending on the greed and as well also face the losses.
And that's why greed is bad in every aspect.
Whether we gamble or we trade, it's not going to give us some good results. Because in the end, there will still be bad results that we should have accept in that term and so these losses are deserved by a greedy gambler.
@terrific, trading is a bit different from gambling, it deals with some technical and fundamental analysis, which if a trader is well equipped with the knowledge of training and how to analyze the market, knowing when to trade and when not to trade, they can make more profit better than a gambler who doesn't have any tool for making accurate predictions but rather rely on luck for their wagering to return with profitable results. Greed can cause an unfortunate losses but it's the ability of the individual to control it, a responsible gambler does not need to be greedy because they already know what the consequences would be.
What I mean is whatever you choose between the two when you're greedy, you'll end up losing both.
You're right that trading is different from gambling.
But what I am saying if you're greedy to both of it, no matter how good you are, you'll have a direction and that's to the losing pit.