few outside of Germany knew that concentration camps existed
The creation of concentration camps was widely advertised in Nazi propaganda, as a show of force to intimidate dissidents. It was the later death camps that were secret: the ones that were designed for no purpose but to do murder at industrial scale.
It's about Trump, dude. Not Trump as politician, but Trump as model for what a "successful" white dude looks like: a sleazebag who cheats on his wives, cheats at business, commits crime on top of crime, uses violence and threats to get his way, etc.
Young white boys need better role-models than Trump and Musk to look up to.
(It's also a parody of the racist shit people used to say about Black Americans and "bad role-models" like gangsta rappers.)
For a start, look at the history of major companies traded in the first stock markets, such as the Dutch East India Company (VOC), the British East India Company (EIC), the Hudson's Bay Company, etc. These were colonial ventures, but they raised money through the sale of shares traded publicly.
However, they were not subject to competition in the market, as they enjoyed legal monopolies and used military force. They also frequently employed slave labor.
The creation of concentration camps was widely advertised in Nazi propaganda, as a show of force to intimidate dissidents. It was the later death camps that were secret: the ones that were designed for no purpose but to do murder at industrial scale.