Stopping? No, but it decreases the illegal distribution tremendously.
Well, we always talk about copy protection and how well it indeed works... usually, many people - including me - tend to think that the effect of most copy protections aren't really worth the money and the stress for the buying customers.
That's why, Lynn, I'd like to ask you if your opinion is "just" an opinion or if there is some kind of research data which it is based on?