To put that in context, Wikipedia says about Carnegie:
reply> he gave away around $350 million (equivalent to $6.9 billion in 2025 dollars), almost 90 percent of his fortune, to charities, foundations and universities
Those famously "richest Americans" were worth single digit billions in today's money. Musk is reportedly worth $600-800 billions. Imagine what he could do with that money. The Gilded Age industrialists were already devils, but to say the quality of the ultra-rich today is in the gutter would be an offense to the gutter.
It seems like when someone does a historical analysis of the wealth of these past tycoons, they often don't do a simple inflation calculation, they relate the wealth to the GDP of the US at the time. By that measure, both Rockefeller and Carnegie were quite a lot more wealthy than single-digit billions, though maybe not quite the same level as Elon Musk.
replyWhat makes Musk's wealth really incredible is how much of it is based on hot air (TSLA).