The primary goal of hiring is not to add capacity for growth, but to free up a founder's time. This reclaimed time can then be reinvested into high-leverage activities that only the founder can do, which is what ultimately drives business growth.
The final 10% in the 10-80-10 rule is not for redoing the work but for final polish and integration. This could be approving a book cover or providing quick feedback in a chat, allowing leaders to maintain quality standards without getting pulled back into execution.
The 10-80-10 rule allows artistic leaders to maintain creative control by focusing on the initial 10% (strategy) and final 10% (review), while delegating the burdensome 80% of execution. This overcomes the common creative objection that "only I can do it."