Adam Clarke on Ecclesiastes 10:16

Wo to thee, O land, when thy king is a child - Minorities are, in general, very prejudicial to a state. Regents either disagree, and foment civil wars; or oppress the people. Various discordant interests are raised up in a state during a minority; and the young king, having been under the tutelage of interested men, acts partially and injuriously to the interests of the people when he comes to the throne; and this produces popular discontent, and a troubled reign.

Thy princes eat in the morning! - They do nothing in order; turn night into day, and day into night; sleep when they should wake, and wake when they should sleep; attending more to chamberings and banquetings, than to the concerns of the state.