It wouldn't be worth trying after all. There would be more losses than wins so he should be able to reconsider whether he really wanted to try it if the risk was too great. He can deposit more money when the money in his account balance is used up and as you said, he can lose $1000 daily. And if he continued for a week, how much would he lose?
It is better that the money is used for trading or investing that does not require much skill so that he can expect to make a profit in the future. Moreover, we will face a bull run which may not be long in coming to the market. Or if he really has a lot of money, he could set up his own casino so he doesn't have to gamble and can make money as the casino's profits.
The guy clearly mentioned that he has a budget of $2k which he wants to use to get about $100 on a daily basis from gambling, so he definitely doesn't have a lot of money so that he can create his own casino platform which requires you to have hundreds of thousands of dollars or even millions in case you want to create a platform that would make a difference.
Now, the point that everyone is trying to make is correct that it is not possible to get steady and consistent profits from gambling, you might win $50 a day but lose $100 the next day, so the $50 that you've earned yesterday goes away with an extra $50 from your own pocket, that's how the nature of gambling is.