You got Microsoft in the wrong category. Gates gave the reins to Ballmer, an MBA, which tanked the stock. Ballmer was never a founder, he was an employee with early stock. Microsoft flourished when Gates was the CEO.

> Ballmer joined Microsoft on June 11, 1980, and became Microsoft's 30th employee, the first business manager hired by Gates

> [Ballmer] left the MBA program at Stanford University

Ballmer is what Marisa Mayer was (or vice versa). An employee that latched onto a rocket. What made the company successful wasn’t them but the founder. By the time you can hire the 10th employee, risk is already greatly reduced.