With sufficiently large population, someone will randomly win against unlikely odds. For example, if there is a 1% chance your startup will succeed, but one million people try it, statistically one of them will have 3 successful startups in a row even without being better than average.
Though, realistically, the chance should increase for the following attempts, because you can reuse some resources and contacts you gained with the first success. The first startup is like "I need to succeed within three years, or return to a regular job to pay my bills". But if it succeeds, the second startup is like "I can keep trying as long as I want to, no pressure".
Though, realistically, the chance should increase for the following attempts, because you can reuse some resources and contacts you gained with the first success. The first startup is like "I need to succeed within three years, or return to a regular job to pay my bills". But if it succeeds, the second startup is like "I can keep trying as long as I want to, no pressure".