Why do you stop when you have wagered like 20% of that. You got decent amount of profit to continue to wager then got another $50 at the end if you complete the wager, aside from that you will also get tickets for the draw from the wager so I would have kept on wagering till I get to $500 wagered mark obviously though because I would have probably lost less than $50 for the sake of getting 5 extra tickets ( or win if Im lucky enough )
I think he made a sensible decision and did not continue to get more tickets and more profit. It is difficult to make money in gambling and when he knows he is in profit, he decides to quit. Yes, there was a probability that if he wagered more, he could have made more money but there is no surety for this. At least he is happy as he did not end up losing everything as happens with most of gamblers.
We should keep emotions and greediness out of gambling, and he did exactly just that.
This is called sensible and responsible gambling.