From Start-Up to Grown-Up

#110 Jim McKelvey, Cofounder of Square - Innovation When it's Your Only Choice, Overcoming Regulation, and Managing His Intern, Jack Dorsey [ENCORE]

• Alisa Cohn

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0:00 | 1:04:11

What does it actually take to build something that has never existed before?

In this episode, Jim McKelvey, co-founder of Square (now Block), breaks down the real story behind building Square from scratch, not with a perfect plan, but through necessity, invention, and relentless problem-solving. 

Jim introduces the concept of the Innovation Stack, why innovation is rarely chosen willingly, and why copying “what worked before” fails when you’re solving a problem no one else has solved. He shares the moment Square felt real, the panic of Amazon launching a competing product, and the counterintuitive strategy that helped Square survive.

You’ll learn:

  • What the Innovation Stack is and why it protects companies from copycats
  • How Square started from a single lost sale and grew into a global company
  • What happens emotionally when you’re building something no one understands yet
  • Why copying best practices can fail when you’re solving a brand-new problem
  • Why mission-driven teams outperform money-driven ones over time

We talk about:

  • 00:00 Why timing is everything, and why being “too early” still hurts
  • 05:30 The moment Square was born, one lost sale that changed everything
  • 10:00 Why the payments industry was designed to exclude small businesses
  • 16:30 Mission vs money, and why people joined even when they could leave
  • 20:00 Amazon launches a competing product, and Square’s unexpected response
  • 26:00 The Innovation Stack explained, and why it’s almost impossible to copy
  • 31:00 Panic attacks, pressure, and the nervous system cost of building
  • 35:30 Copying vs innovating, and where founders get trapped
  • 47:00 Imposter syndrome, even after success

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Download her 5 scripts for delicate conversations (and 1 to make your life better)

Grab a copy of From Start-Up to Grown-Up by Alisa Cohn from Amazon