Elon very likely lives in his own bubble with no one around that can disagree.
A millionaire could surround themselves with other millionaires and get a reality check. There are few billionaires and trillionaires, and they are likely surrounded by people that depend on the billionaires for their life's stability.
This is a good argument for taxing billionaires heavily. They should not exist and will be destructive as they loose touch with reality.