Nah I never ever did it for a throne
That validation comes from giving it back to the people.

from Macklemore and Ryan Lewis (Ft. Ray Dalton) – Can't Hold Us Lyrics on Rap Genius

He didn’t pursue music for the throne (i.e. the fame, the prestige, or the power) if he were to become successful. His career success comes from a production of good art for listeners, along with a strong relationship between him and his fan base, not from any amount of money.

This ties into the previous line about Julius Caesar—who sat on the throne of the Roman empire

There might also be a reference to Kanye & Jigga’s Watch The Throne.

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