It's not just limited to L.A. Here in Orlando, there's a 90,000 sq. footer being built in my neighborhood right across the street from me.
We have a few quaint cottages here in Dallas. This one could be had for only $135,000,000 https://www.forbes.com/sites/morgan...ew-most-expensive-home-for-sale/#1418891d3479
If i am in a market for Giga mansion, I would rather buy this magnificent property at $135 mil than eye sore of a property in LA referenced above.