Instead of looking at "% of successful exits that had n founders", it seems more relevant to look at "% of startups with n founders that had a successful exit".
Without knowing the distribution of startups with 1, 2, 3, 4, 5+ etc founders, it's hard to tell how much more/less likely each group is to succeed.
Without knowing the distribution of startups with 1, 2, 3, 4, 5+ etc founders, it's hard to tell how much more/less likely each group is to succeed.