That's not true at all, they practically overhauled the team twice last year for him. He's been to the finals for what, six consecutive years? As recent news is surfacing he is putting forth entertainment projects in LA.
I have no doubt that LeBron is looking at entertainment projects in LA. Hell, he's been playing in that sandbox for at least five years now.
That said, if you take a look at the supporting cast of last year's Cavs though, you can't really tell me that he had even an average team around him. Take LeBron off of last year's Cavs squad, and Cleveland would've been contending with my beloved Phoenix Suns for the #1 overall pick.
Add in the fact that he reeeeeally hates Dan Gilbert, and I think that LA was definitely the smartest play for LeBron.