Jeff Bezos

Bezos's first letter, in 1997, told Amazon shareholders the company would put long-term market leadership ahead of short-term profits, and he reattached it to every letter he wrote until stepping down as chief executive in 2021. That is the clearest consistency test on this list, and Amazon broadly did what it said. Later letters explained ideas like Day 1 thinking and two-pizza teams, and admitted failures such as the Fire Phone as the price of experimenting.