I agree there is a problem. And there would be precedent for breaking up a company. But she is going further than that. How about the definition of platform utilities for companies with annual global revenue of over $25 billion (see article for full details). There is more too, I won´t repeat the points of the article. I am pretty liberal but I think this kind of regulation is risky.
Did we have large international competition in those days?
What sort of international competition might be the result of busting up Google? I really don’t want to go back to the bad old days of Motorola, Nokia, and Ericsson making phone OSes.
Would Alibaba be a better marketplace than Amazon if Amazon had separate companies, like if Amazon Essentials and AWS and Marketplace were distinct companies?
Of course we do. See Northern Securities v. United States, Standard Oil v. United States, and the many other landmark antitrust cases. Let's not pretend this hasn't been an issue before.