The LA market may be huge but most of them are transplants and its not a huge NFL market.. I don't understand why you would want multiple teams there. In SD's case the owner wanted public funding for a new Stadium in SD, they got less than half the vote and apparently chargers fans aren't that great.
I think its pretty ****ty for billionare owners to ask the public to help them pay for a stadium. Thats like totally taking advantage of people. It got 43% of the vote which is actually pretty damn high, but for that kind of public funding SD residents needed a 75% vote in favor of the 650 million.