From the number of times in my life I've pulled up to a McDonalds drive through looking for breakfast only to find I misjudged the time slightly (and left, because I'm not in the mood for a burger at 10 AM), or the times I looked and found I couldn't because it was already a bit too late, I can totally believe this. Jack in the Box became a go-to for me in college for exactly this reason. Morning classes let out, it's 9:45 or 10, not enough time to get McDonalds breakfast, but I can always get breakfast at Jack in the Box, even if I prefer McMuffins.
Largely a moot point now, since I try to eat fast food sparingly, but boy do I wish they had all day breakfast when I was in my early 20's.