Again you guys seemed confused. Kobe was not a leader so it did not matter what he thought Shaq should or should not do. He didn't have the influence necessary to convince Shaq to see it his way. He was the second option and not in a position to command anything of Shaq. Its a glaring example of his lack of a likeable personality and leadership skills.
Actually, it is you who are confused. What Kobe thought, did matter. Kobe was the "heir apparent" to be the Lakers next leader and everyone knew it. The issues between Shaq and Kobe didn't start to surface until Kobe started to have more of a voice in the locker room.
Additionally, you seem to think that MJ walking into that same Laker locker room as a rookie, would somehow be able to inspire Shaq where Kobe couldn't. MJ entered the league with no more (maybe even less) fanfare than Kobe did. To assume that Shaq would have somehow listened to a younger and not yet established MJ when he didn't Kobe, is you making assumptions based on what you WANT to be true.
Simply put, Shaq was the alpha at that time and didn't even begin to consider being a 2nd option until he went to Miami. Therefore, he wasn't listening to anyone!!
This also speaks to the immaturity of Shaq as one would think that as a superstar and leader, he would be willing to listen to anyone that had an idea that would help him improve. After all, a good idea is a good idea, regardless of where it comes from.