The main objective is very simple to understand.
The financial goal of a start-up should be simple: profit in the least time with the least effort. Not more customers, not more revenue, not more offices or more employees: more profit.
He includes some very “tuff” points as well. 80/20 wrt/ your time ( do the “right” things … not the easy or expedient/inertial things). 80/20 wrt/ customers ( ie some “supposedly” good customers have to be fired )
I also like that he says “revisit Drucker” … always a good thing to do 🙂