His total winnings might be considered a year's salary in some parts of the US, and only 6 months worth in another..
Passing up an oppurtunity to get a good education and a degree could cost him hundreds of thousands in future earnings.. Maybe millions, over a lifetime..
Gambling is high risk for relatively little reward.. If any reward at all.
Best to stick to penny-ante and enrich one's life through the friendships developed through the weekly (monthly?) poker nights..
He will benefit far more from good friends than he ever will from the gambling..