This discussion of Fable 3 does contain spoilers.
It’s no spoiler to say that at a certain point in Fable 3, your character becomes monarch of Albion. The fact that you’ll get to make royal decisions and decrees and manage the kingdom was one of the features that Peter Molyneux was talking up from the beginning of its marketing. The other big selling point in the advertisement for the game was the concept of revolution. And, as advertised, the game’s story does center around you starting a revolution against your tyrannical brother, but it is a revolution that you have no control over. There are allies to be won, but you can’t choose them (with one exception, who doesn’t end up affecting the game or story at all). To win those allies, you have to make promises. You have to make them. The game won’t proceed unless you make the promises that it demands of you. And while there are sections that allow for broad freedom, during which you can pursue side quests as you please, at a certain point you have to go off on a foolhardy expedition that makes no sense at all. Though the plot clearly needs this expedition badly, you have no say in the matter. You don’t really even have the option to fail.