Question: How did elon maintain his share in Tesla during the finance rounds? He was not a cofounder. During the years, he did not have other significant source

Question: How did elon maintain his share in Tesla during the finance rounds? He was not a cofounder. During the years, he did not have other significant sources of income. And Tesla has been capital hungry for a long time. I am quite interested in his techniques, and am guessing so do a lot of founder wannabes.