Noticed a comment by Skye_tan that commercial photographs(ie. for commercial usage) should not be tightly cropped. On further examination of other commercial photographs in ads and such it does seem to be the case.
Why is this so?
The only reason I could think of would be to make space for text and other graphics that are necessary to sell the product. Other than that though, is there any special reason to crop commercial photographs more loosely? Or any photographic reason for that matter?