I think you should read The Black Swan. FAANG type companies are rare events. Nobody can plan a Unicorn company. They just happens. Look at the list of dead products that Google/Facebook creates every year. Even managers at FAANG don't know what is going to work.
You can focus on creating sustainable small software business. I don't know if you have read "Start small, Stay small" by Rob Wallings. It talks about creating a sustainable small business on the side.
