Right now, the real issue is that rights holders have no control over their content once it is available on the web. Copibec recently acquired a tool that allows it to monitor the activities of software robots on websites.
We see software robots harvesting content from websites that already have an exclusion file such as a robots.txt page, which sets out the rules for such robots' activities. However, these robots either do not consult this exclusion file or ignore it, and harvest the website's content anyway.