I don't know if it's a "good" reason or not, but the business of manufacturing centerfire rifles in North America revolves around deer hunting. No one seems to want to spend the money on a centerfire rifle if they can't use it for deer hunting, at least in theory. People(some, anyway) will buy .357, .44 mag or .223s as 'utility' rifles which might, possibly, take a deer, under the right circumstances, or "if necessary". The received wisdom, however, is that carbines or rifles chambered for centerfire rounds like .25-20, .32-20, .256 Magnum, 9mm, .45acp, etc., aren't any good for humane, sporting deer hunting, so they just won't get made, even if they might have other uses.
