You are right, extremes are bad and balance is good. But if you have a startup and nobody in the 10 person company has managed people let along other managers f

You are right, extremes are bad and balance is good. But if you have a startup and nobody in the 10 person company has managed people let along other managers for more than 5 years, yeah, hire from outside and create more management roles internally so your people can get promoted and gain experience. There is no substitution for experience, especially political experience for a political role.