You're somewhat right, but a lot of players that are normally smart enough to quite tend not to do so when they are drunk. And especially if they had a really good night at the casion tables, or sometimes if they had a REALLY bad night and are just going off.
I remember a couple years ago, a buddy of mine who I won't name came thru. He was beating up all the 7's and losing all the cash he made in the poker room. I literally backed him in maybe 20-30 different games anywhere from $20/game to $2k a set. Then after word got around that he could play some of the APA 7's started trying to stake some of the other shortstops and road players agasint my guy. He mopped the floor with them, I remember particularly one kid from Philly was there who everyone was saying was "unbeatable", my guy crushed him. THEN these APA guys go out and find of all people Walter Glass at some local room there in vegas and try to have him come snap off my man. My guy made quicker work of Walter than I thought he would, because in Walter's prime he was a monster.
With all that being said, if you are an A player you can make a few thousand easy, if your a sporty shortstop you can make 10k if your smart. If your a champion you can make a freaking KILLING.