There is no reason for them to do so. What possible motivation would there be for the English, Norwegians, Germans, Normans, Flemish, and others to go to North Africa? The holy land had an idea behind it that could and did motivate people, North Africa does not matter one bit go the northern half of Christendom. The while point of the Crusades was to get all Christendom working together to redirect efforts away from fighting each other and towards something the pope saw as productive. You can't do that with a place most don't care about. That's why only Germans went on the Baltic Crusade and by and large later Crusades at North Africa were from Spain, Italy, and southern France. They were regional concerns.Personally, if they had just rediverted there efforts to North Africa from the start, I think things would have gotten a lot diffrent.