ccMainly because of the free-ranging quality of the web where hyou may get one source but risk missing several others making it an exercise in futility. Most measures to control content and software have been quite effective till the internet became so far reaching the policing efforts have simply become too costly. There have been major success stories with major piracy hubs being closed down for a couple of hours till they got the system back up again. The ability of these hackers to move from place to place is quite frustrating for law enforcement for they can lose these people in the blink of an eye. Even some for the best Information Technology security systems are having a hard time to cope with the ever growing threats that are on the internet.
Spam rings have been busted again and again yet they still continue to flood our mailboxes. Music is downloaded from the many FTP sites, such as a recent incident with a media personality getting axed due to his filing a review of an upcoming movie that isnot to be released for sometime. Till security experts find a way of solving the piracy issue, no effective way of policing the millions of pirated files that are floating around on the web, nothing may be effective to control such high volume flow of unauthorized files and content.