This is really not true. The wealthy aren’t playing 4D chess with the economy, they are just as short-sighted behind closed doors. The Great Depression fucked a lot of wealthy people up and turned the entire nation against them. It can happen again.

Edit - and for the record, the abundance does vanish in a depression scenario. Factories shut down, productivity collapses. The world will literally extract, refine, process, and build less of everything. You can’t build a fleet of yachts without a functioning economy.