Search Privacy is Making it Difficult to Judge What Web Visitors Want

Of late, there were many privacy requirement from companies. That means, information about what people want or searching is now hidden from web masters. I thought such information would not infringe on users browsing, after all no personal information were divulge. The search keyword terms is useful as it shows what the web visitors interest, and yet Google is now hiding this. Without this information, there is now no way to know to what extend how people found your website.