You drop out, start a company because nobody wants you, get some seeds funding with sheer luck, grow the business progressively, hire some more people, grow some more and eventually raise 2 more rounds reaching 120M. That takes many many years.
It's a massive combination of luck and being at the right place at the right time selling an okay thing. Then persevering over numerous years and executing decently. Most people won't get there not because they are incapable but because they don't have the environment and the bit of luck.
