I agree with you with being highly skilled in order to defend against a collegiate wrestler's shot. You can learn how to stop takedowns using your own form but you have to practice with someone who really knows how to shoot and not someone that is training the same striking art that you are taking. Even though I do Kung Fu, I spar with a Sanda group from time to time that likes to do shoots and other grappling take downs. It helps me to learn how to use my Kung Fu to defend against it. Most martial art students don't know how to shoot properly which is why there are so many people that think they can escape it.
With all of that said, I would never, NEVER,
NEVER, try to defend against or counter a shoot by punching. Anyone that has a video or a martial arts demo that uses punches as a defense doesn't understand shooting. Anyone that takes a high narrow stance when fighting is just asking to be taken down by surprise.
This is a video of my brother who was a collegiate wrestler explaining basic shoot defense
This is a video of my brother in action. If you don't know how to defend against a shoot then you better learn how to escape from the submissions.