What is scary is the math when calculated in how many person-years someone like Bezos can buy. Divide his net worth by a reasonable cost for a soldier. Bezos could hire vastly more troops than Henry VII could have in his day.
$150,000,000,000 / $80,000 = 1,875,000 ... he could theoretically field an army large enough to sway any modern conflict. In person-buying potential, his wealth is on par with Genghis Kan or Stalin.