Dhruva Maharaja, as an ideal king, practically emptied his treasury by giving charity. A king is not meant simply to realize taxes from the citizens and accumulate wealth to spend in sense gratification. World monarchy has failed ever since kings began to satisfy their personal senses with the taxes accumulated from the citizens. Of course, whether the system is monarchy or democracy, the same corruption is still going on.

Srila Prabhupada, SB 4.12.10, Purport