If I believe your sources then I will admit the claim is incorrect.
Is there any other topic you would like to discuss that you would like to use 20 year old testimony before the Senate as the basis for your argument?
If, as has been posted on this thread that today there are less than 2,000 "Adult Bookstores", which is an industry number, is true, then it is safe to assume that number was less 20 years ago and the industry has done nothing but grow rapidly. So, lets assume that there were 2,000 back then as well. That means that there would have to have been 667 McDonalds in America in 1984. It is rediculous to think there were only 667 McDonalds in the US back then.