What about the Rams? And the Raiders? Sorry, but moving a professional team to LA isn't an automatic slam dunk, so to speak. And in today's economy I still maintain the Maloofs aren't going to pull up stakes and move the team until/unless they have exhausted every single alternative. And if they do, the economic benefits of Kansas City, including taxes, would be much more enticing than remaining in California...
Its never a sure thing. But the Raiders left because of the aging LA Coliseum and couldn't get a new stadium built. The Rams moved from the Coliseum to the Anaheim stadium and eventually moved because of problems with that as well. These things happen and teams move. With a big part of their business in Vegas, I doubt the Maloofs want to move too far away.