[citanul]

bah, i guess that i'll write a real answer:

the overwhelming reason that more people aren't very good/great at these games is that they either don't work very hard at it or don't know what to work on. this can take on the form of not having an open enough mind to consider that things besides the things you concentrate on or are good at are important to success and improvement. another reason is that they are very poor poker players.