Exactly this, when someone runs away, they usually balance far from their opponent, which makes it boring for them having to space every single turn without doing anything, and boring/irritating for the opponent knowing that the amount of frames left isn't going to be enough to even try and continue the fight.

On the other hand, it's most irritating when the opponent doesn't actually have the proper skills to make a come back, so instead of giving up, whenever no grab is between two opponents, immediately try to come back no matter if he/she is going to run or not, that's what I do, and it usually works.