This question would apply more to those who chose to become a jw than those who were raised from birth in it. If you would have had the internet with all its information on the jws when you first started studying, do you think you would have been warned away from them?
I use the internet now to google anything new that I am considering getting involved in. If I would have had it 30 years ago, I really don't believe I would have been sucked in to this cult. There is just too many warnings on the web about the jws and clear logical arguments to prove their doctrines wrong.
Hopefully, this will slowly eat away at any new converts. Most of their converts are young people, who grew up using the internet and are not going to be scared off by the society's paranoia.