> the only way to overthrow a dictatorship is through a revolution.
No. E.g. quite many monarchies have been reformed without revolutions.
No. E.g. quite many monarchies have been reformed without revolutions.
They don't have much power due to _many, many revolutions_; they may not generally get called that, but the wars leading up to the Magna Carta, and later the English Civil War, were clearly revolutions against the monarchy, and successfully limited its power.
Going from non-absolute to purely ceremonial or non-existent is easier, but generally breaking the power of the monarch in the first place does require some sort of revolution.
Going further back in the history, some feudal monarchies were actually not absolutist in the sense the king had to manage various factions of landowners, clergy, etc (so-called Estates) or even share power with them. So it all depended on the relative power of the monarch and others in the society.