Unless someone else has the guts to shoot the ball or make a play, instead of just handing it to Kobe, he will keep doing this. It's not ideal, far from it, but at least he's trying hard.
There is no better chance for Lin to take over, if he has the courage. Head coach can't do a damn thing. It's always easy to say that Head Coach should draw a play - let Lin drive and kick out to Young for instance, but can he execute? Or even post Kobe up, but can they get the ball to Kobe deep? They can't do it in the beginning of the game, what makes you think they can achieve that at crunch time?