[zinglersen]

Not really, otherwise services that host user-generated content, like youtube, wouldn't exist.

What a hosting service needs to provide is a way for the user to flag content + provide an "acceptable" response time.

Another approach, a more proactive approach, is for the content owners to share the digital "finger print" of the IP (movies, music, etc.) with the hosting service, so that the hosting service can scan uploaded files and compare them.