Jake Castillo(@jakecastilloooo):First business I ran was hydrogen water bottles. Best month: $10,000 in revenue. Killed by my own risk aversion. Competitors were spending $50, $60 CPMs to scale fast. I was at $20 because I needed the math to make sense. They scaled. I didn't. Speed is a price you pay before you find out if it works.

Jake Castillo

@jakecastilloooo

Co-founder & COO of Cal Al (acquired by MyFitnessPal) - Sub to my free newsletter

Joined March 2024

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Jake Castillo@jakecastilloooo

2026.05.13 00:06

First business I ran was hydrogen water bottles. Best month: $10,000 in revenue. Killed by my own risk aversion. Competitors were spending $50, $60 CPMs to scale fast. I was at $20 because I needed the math to make sense. They scaled. I didn't. Speed is a price you pay before you find out if it works.