Jack Dorsey & Sarah Friar ·Square, Inc. ·3 AUG 2016
How Square Turned a Payment Tool Into a Business Platform
The real moat isn't the hardware — it's every product a seller adopts after the first swipe.
Leader · Profile
Jack Dorsey
Twitter·Block (Square)
2006–present
Co-founder and former CEO of Twitter and founder of Block (Square). His communications appear in the Twitter acquisition saga and platform-governance debates.
JD
Correspondence in the archive
2 letters
Jack Dorsey ·Block, Inc. ·2 NOV 2023
Cap the Company Before You Cap the Customer
When the company is growing faster than the business, the fix is a hard ceiling, not a pep talk.