I did not listen to the podcast, so if my point is covered in there, my apologies.
The reason why the Chargers would move to LA is all about franchise value. The Dodgers sold for $2B in 2012. The Clippers sold for $2B in 2014. I’m going to guess that moving to LA adds $500M to the Chargers franchise value. When the Chargers owners decide to sell, they will get far more money for a #2 team in LA (with a new stadium) than they would for a SD team with a new stadium.
Which team would you rather own the Padres or the Dodgers? Check the values for those teams… $2.5B for the Dodgers, $890M for the Padres.