Why dont people use
blankcounter? Common question we white belts ask ourselves.
Let me just directly attempt to answer your question first. Is there a defense or counter to the counter? lol. Yes, dont cross your ankles with your hooks in, foot posture and forcing the opnt to address serious threats to their neck come to mind.
So as a white belt when we learn an awesome counter we always ask ourselves, why doesn't everyone use this? I hope you realize Im going to get bitched at for writing too long a response.

Reality is that jiu jitsu is like endless counter to counters to counters. For example gokor has an awesome knee bar that you can use on people that get you in spiderweb. Yet that doesn't negate spiderweb as a super legit position. Nor does it mean that when you put someone n spiderweb you are hoping that they dont know the sweet knee bar. Essentially we are going to keep countering each other until a point is reached when one person's attack is more polished that the other guys defense.
hopefully someone more knowledgable than me will give you a better answer.