I have a very good friend who lives near Alpine, TX that has well over a 1000 firearms. They are out for everone who visits his house to see, his den walls are covered with old Winchesters and Colts. They are hung everywhere you look throughout the house. He doesn’t own a safe, and once said anyone that wants to steal his collection is welcome to try.
I have a sizeable collection, but they are (almost all) locked in one of the safes.
As for Hollywood, with the gun laws in Kalifornia, it must be a real pain to own a collection there. You would almost have to be a Steinberg to afford the permits, I would bet he has one hell-of-an alarm system, and armed guards walking his property