Relax. Los Angeles is YEARS away from even having a stadium that's close enough to state-of-the-art to make an NFL franchise economically viable...not to mention its poor record in supporting two previous franchises. LA is a baseball, basketball and soccer town. It's even interested in hockey now that its NHL franchise is top of the heap. And it's pretty barren territory for the National Football League given all the demographic shifts in the region in the last 20 years...way less promising in the long run than the Twin Cities. And the same goes for any of the small to medium market teams whose fans are suffering from anxiety of possible franchise shifts (such as Buffalo, Jacksonville, Nashville, Oakland, Charlotte, etc.). All of these teams, with the possible exception of Jacksonville, are profitable where they are now, including the Vikings, and a move would probably be more trouble financially than it's worth.
There are a handful of cities in North America which MIGHT support an NFL franchise and don't already have one, including San Antonio, Columbus, and Toronto. But none of them has anything remotely approaching a suitable stadium...they're all either too small or configured wrong (no luxury boxes) or both. And there's no private or public sugar daddy ready to step up and build one.