David Senra

David Senra Conversations with the greatest living founders.

08/23/2026

Power Law Thinking. Why power laws rule everything around us. From my conversation with Sam Altman. Available now.

08/23/2026

Great founders kill good ideas to focus on great ones.

08/22/2026

Sam Altman. OpenAI. Tomorrow!

08/22/2026

Travis Kalanick on the little details that helped Uber beat Lyft:

“I needed to subsidize rides to gain market share. When I gain market share there’s a network effect because if I’m bigger, then my system is more efficient and if I’m more efficient than them, they have to subsidize more than I do to compete with me.

This is why Lyft is smaller than Uber because we were better at this and people don’t really know that’s what it takes.

But how do you get efficiency edge?

Efficiency edge starts when somebody even downloads the app and signs up.

If it’s easier to sign up on one versus another you have an efficiency edge.

If it’s easier to call a vehicle and get it to you without problems, you have an efficiency edge because you’ll have less support.

If the cars are moving to where the demand is because the driver app has good ways to point drivers to the right place that means you have shorter pickup time, that’s another efficiency edge.

And efficiency edge means you get bigger faster.”

08/21/2026

“If you’re doing something that’s easy you’re about to get your ass whooped.” From my conversation with Travis Kalanick, founder of Uber & Atoms.

08/20/2026

Travis Kalanick (Founder of Uber) on pain, progress and winning:

08/20/2026

“The lifestyle of an entrepreneur is I can take more pain than the other guy and I’ll prove it.” — Travis Kalanick

08/19/2026

“I was running a $70 billion company the way somebody who thought he was going to starve next week would run it.”

“Every decision I made at Uber, I defend to this day. Never had chalk on my shoe.“

“The problem was I ran too close to the line in too many situations. When you’re big and important, the scrutiny and expectation is that you don’t run that close to the line, even if it’s correct. That is a thing I definitely did not understand.”

“It comes from what I did before Uber. First four years, no salary, ran out of money several times, super grind, lose all friends. The non-luckiest entrepreneur journey of all time.”

“It was so hard that I had to be epically precise and hardcore just to pay the bills and go to the grocery store next week. And that precision and intensity made Uber what it was.”

— Travis Kalanick

08/19/2026

Deleted scene: Travis and I talking about the dinner we had last year:

“I left that dinner thinking maybe I f**king scared him.”

08/18/2026

Travis Kalanick on finding your business soulmate:

“I like to say you go out on a date with an idea. Was it a good date? Did it go well? How did you and the idea get along?

Who you are is going to be a big part of which idea works for you. [I call this] finding your sport or your business soulmate.

If you’re in touch with who you are then when the right idea comes your way you just know.

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