There are strong arguments that more EAs who earn to give should focus on starting high-growth startups in order to become billionaire philanthropists. First, altruists ought to be risk-neutral in terms of the money they earn, and entrepreneurship has higher earnings on average than most relatively stable, high-earning careers. Second, more big benefactors would diversify the EA movement's funding sources, which could help democratize power and make the movement's funding more resilient to catastrophes such as the collapse of FTX and the slump in Meta's share price.
It seems to me like Founders Pledge has expertise in entrepreneurship and could encourage more people who are already committed to effective altruism to start startups and provide them support to help them succeed. This is the reverse of what they focus on now, encouraging existing entrepreneurs to donate to high-impact charities upon exiting their startups. Undoubtedly, 80K already pushes some EA-aligned people into entrepreneurship if they are a good fit. What role could Founders Pledge play in this?
The classic case for entrepreneurship-to-give: "Salary or startup? How do-gooders can gain more from risky careers" from 80K (Carl Shulman, 2012)
"Entrepreneurship ETG Might Be Better Than 80k Thought" (Ben West, 2022)
"EA hasn’t sufficiently encouraged entrepreneurship-to-give as a strategy to diversify funding" – in "A libertarian socialist’s view on how EA can improve" (freedomandutility, 2022)