For printing one may need a big size canvas, but for creating vector artwork one doesn't really need such a huge canvas. Maybe that is why this constrain in AI exists. The printing ratio could be also changed though. ... View more

Sad, sad world . You can't resize it in Ai, but in InDesign it has no problem. There it is called "pasteboard" and can be changed. ... View more

Canvas size is different than artboard size. I am also looking for a way to resize the canvas which is the working area where multiple artboards can be placed. ... View more