Jason, good points. You are obviously an astute student of business. Jack Welch was the most iconic CEO whose job was to be the fitness trainer for a tired behemoth. All CEOs owe their hard charging style to Welch. Some dress it up as a nice guy, like Virgin’s Branson, but in the end they all do the same thing, wring efficiency out of people with talent. Time is money, period.
As to the 10%, it was formulaic at a time there were no written rules, so that made it easy to implement because the numbers told you what to do. We have softened a bit since then, but if you look closely, not much has changed. Watch Facebook or Google when they lay off people, it comes to about the same.
As to Musk, he is completely amazing, although sometimes I think he steps on the edge of his skis. That’s not surprising given his achievements. I followed him as CEO of Zip2 (his first startup). You may be surprised to hear no one even mentioned his name (I came in after he had left). Elon learned how to be a disruptor later in his career.