L.A., quite frankly, didn't support the Rams the way they should have, since they were there since 1946. The team didn't draw as well as a team in a huge market like L.A. should draw. I don't even count the Raiders. Al Davis is the Carl Ichan of his industry, and he has used both L.A. and Oakland to just make himself rich.
The biggest reason L.A. lost out to Houston to get the 32nd team is that Houston had a concerted, comprehensive plan ready for the NFL, which included a new stadium deal, while L.A. had rival bids, no concrete stadium plan, and not as much interest on the part of the citenzry.
L.A. will get a team someday, but how long will that team stay in Los Angeles?