I know the move doesn't make a ton of sense from a basketball perspective, but I think the guy has made peace with the fact that he's got three rings instead of six. He's said multiple times that he's proven everything he needs to on the basketball court. Honestly, if he can continue to be 3/4 of the player he's been the last four years, he'll continue to rack up numbers and render the GOAT debate irrelevant. 15 seasons of Jordan vs. 20 seasons of LeBron is no longer a question, especially when you remember how bad Jordan was in Washington.
The Lakers aren't great now, but they can be, especially if they don't force a trade for Kawhi. Hold onto your young assets. Kawhi will come to LA in a year anyway. Sign Boogie Cousins to a one-year max and see how he fits with LeBron. You'll get eliminated early, but LeBron will be able to coach up the young guys. Next year the starting five could look like this:
Ball
Ingram
Kawhi
LeBron
Cousins/Lopez/DeAndre Jordan
Depending on how LeBron ages, that team could be better than Golden State. Brandon Ingram is going to be a star, and soon. Let's not discount the idea that Durant leaves Golden State for the Lakers if the Warriors are eliminated by Houston or Boston next season, either.
In any case, I think LeBron went to LA for business reasons. He wants to become a billionaire and make movies. He wants to own an NBA team one day. I feel tremendously lucky to have had him on my favorite team for 11 seasons. I wish him the best, and I'll be rooting for him.