On the other hand, the copyright owners will have a harder time finding the allegedly infringing material. A bot that can find and scrape media on any website n

On the other hand, the copyright owners will have a harder time finding the allegedly infringing material. A bot that can find and scrape media on any website needs to be pretty advanced, especially if the site is using encrypted media extensions. And after that, getting into contact with the owner of the site is not trivial. It won't be worth the effort in the majority of cases. The centralisation of media on youtube, soundcloud etc has been very practical for litigious copyright owners.