"Richest 0.1%" is not some ultra wealthy billionaire class. Making $90k/year in the US already puts you in the 0.1% of richest people worldwide by income. I assume a fair share of the audience here makes this much.

https://www.givingwhatwecan.org/how-rich-am-i

Don't know what the data is for net worth, but given that the vast majority of people worldwide barely live paycheck to paycheck, I assume even a small amount of savings puts you in a very high percentile.