They'll never do it. Alphabet/Google is all about the democratization of data and becoming taste-makers is anathema to them. Nobody else can do it because they don't have the network.
Friend of mine is a DMCA mercenary. He works for a company that media organizations pay to scour Youtube for copyright-infringing content. If you pay them to find your content, they look for your content and serve up takedown notices. They're one of many companies that do this.
Note that Youtube could do this and make the companies much happier - this is an industry that exists solely to make Youtube comply with the law. But Youtube won't because then they have to be responsible for their content.
Thus we come full circle: the problem on the Internet is Alphabet because they fundamentally believe they should not be responsible for the content they display.