It's a combination of two things: 1. Kobe and Nash would never work. This is not a chemistry issue. They're both very successful in their games and are so because they dominate the ball (not in a bad way). Kobe is successful because the ball runs through him. Nash is successful because the ball runs through him. You can't really combine those. This is another reason why Al on the bench doesn't work because his strength lies with the ball running through him, but I digress. 2. Dwight is not a champion. Seriously. He is, quite literally, the next Tracy McGrady but worse. Despite people paying lip service to it, the psychological profile of players is completely underestimated in this game. There is no amount of talent than can compensate for the emotional immaturity that he displayed in Orlando. Now he's upset, again, about touches (go figure).
I hate Kobe. I hated how much everyone in the media kisses his ***. That being said, from a purely psychological standpoint my hat is off as the guy has truly proven himself a champion. Nash too.