The discussion of the dichotomy between the quick pivot entrepreneur and the visionary founder is interesting. But it’s important to note that the two key visionary examples: Steve Jobs and Mark Zuckerberg were both successful very quickly. There was no thought of pivoting because they didn’t need to pivot.
Sure, Apple eventually struggled, but their real problems that eventually led to a jump start came about after Jobs left the company. The jump start came when he came back. Facebook will not be getting rid of Zuckerberg.
You could also sort of argue that launching the Mac, then much later the iPod, iPhone, and iPad were all tiny pivots themselves (though made possible by an already successful business, no doubt).