I don't see it that way. I think, generally speaking, most NBA player's individual success comes from team success (unless you're talking about true, rare superstars). I think that Lance had four years here to slowly develop his fit into this team, and the team had time to find it's fit around him and vice versa. I think we had mature players and a coach that was willing to be malleable.
His success was not a fluke. It was a product of his innate ability as well as the system around him.
I think the stops in Charlotte and LA are beginning to demonstrate that he needs this around him.
I don't think that takes anything away from his innate talent. He still has it, but it's simply not enough.
It's not a lot different than why J. Hill is starting to blossom here. Innate talent has to be complemented by teammates that balance out one's skills, chemistry, etc etc.