Yes, it's referring specific to a "large quantity" aspect of it. If you achieve some X, and then achieve X again, and again, people will trust you to achieve X again.

Of course, that leads to people faking past successful startups. There are plenty of successful serial entrepreneurs out there that sold stuff for pennies to their family or something like that.

Someone that has failed has learned valuable lessons on someone else’s dime. That can be more valuable that someone that got lucky to get success.

Unless they figured out how to get lucky, then definitely follow the leprechaun…

Sequential/ordered. One after another.

Notably, relating to a series of events. Serial.

Serial trust like in serial killer.