New Yorkers do not entertain in their apartments, where Californians do a great deal of entertaining in their homes.
Los Angeles is the land of beautiful homes, cars, and people. The wealth is more visible than in New York City.
Therefore, glamorous restaurant exposure is not necessary. The Los Angeles jeweled and dressed attend the safe and elite gatherings in the privacy of their own homes.
In Los Angeles, elegant dining has not gone on vacation, it's gone private.