You are doing solo, technical, concentrated work.

I have seen a lot of people do more and better. But different work, not coding.

Like leading and managing people is very possible for some elite people to do for say 70 hours a week and mostly involves talking, persuading, answering emails and phone calls, and most importantly making good decisions.

The value of good leadership and good decisions is directly proportional to the number and quality of people being led.

So that could be a huge value. Doing twice as much of it could way more than double that value with compounding.