According to Forbes or a similar list.
This is not adjusted for inflation; they must be a trillionaire as denominated in dollars of that time. (USD)
The richest man in the world right now is Elon Musk with a fortune of 227.1 billion. His wealth is mainly contributed by holding shares in Tesla Inc. For him to have 1 trillion in 2028 he would need to increase his value by 400% over a 5-year period, equating to a sustained growth rate of 34.5% per year which seems impossible to accomplish.
Reference:
@DequanGao I would take the bet that Elon himself is a trillionaire by 2028. Don't think self-driving is actually fully priced in yet. Let alone humanoid robotics.
40% seems too high for this. 5 years ago the richest person had $110 billion, today they have $230 billion, that's a 2x jump and we would need a 4x jump. I can't find any examples of a 4x jump in the net worth of the world's richest person over a 5 year period in the last 30 years, except for 1994-1999 (22 billion -> 90 billion). I guess the most likely way for this to happen is Tesla grows to have a 3 trillion market cap, same size as Apple currently?
@dominic I think the more important context is that Bill Gates' net worth at the peak of the dotcom bubble was already near $100 billion. So basically ever since the tech boom the net worth of the richest person hasn't outpaced inflation
@n1psey If you start counting from there, sure (although I think it maybe still has outpaced inflation?) But if you start counting from eg 2003, it's outpaced inflation significantly.