Nah, it happens quite often. Am I missing something? We even have a saying for that in German, which goes like "that wasn't a penalty-worthy foul" implying it was a foul indeed (and hence a pen) but because we don't want the games to end 9-7 with 6-7 pens included they aren't given. Also quite liked by any sort of announcer is the good ol' "if that'd be a pen, we would have 5-6 each game". Mostly used within corner kick riots. 
Just wanted to add this before the case is closed!
Just wanted to add this before the case is closed!