Unfortunately, they're rarely content to work 2 hours per
day at their cushy jobs.
These are not the characteristics of executives at successful companies. Have you ever started a successful business? If so, did you work two hours per day? I doubt many YC founders would see themselves in this assessment.
Yes, yes, I see. A person struggling mightily to build a brand-new company from scratch is obviously a perfect analogy for a person who's placed in a high-level position at a strong, established company. I bet that their tasks and workloads are practically identical, even!
I doubt many YC founders would cut IT because things are working well.
Startup founders are in a different class because there's actually 8+ (sometimes 14+) hours of work to be done in a day in a company that's fighting its way into existence.