Obviously I can't argue that the game engine is perfect or that the players always act rationally. However, since the original question was how to get your C or PF to stop taking 3s, my point was simply that if you use an inside focused offense the amount of 3s that your inside players will take is dramatically reduced.
Do BB Cs and PFs hoist up the 3 more often than in real life? Probably (my stud C put up 7 this year, making 0). However, I think teams running outside focused offenses need to be prepared for their C and PF to shoot from beyond the arc more often than they would otherwise prefer.
But as long as we're being nitpicky, Wallace has taken 43 treys, making 5, over the course of his 12 years in the NBA.
(http://http://sports.espn.go.com/nba/players/stats?player...)