The US Department of Justice is currently pursuing two anti-monopoly cases against Google - one over search and another over advertising technology. The department has laid out potential remedies in the search case, including making Google divest parts of its business such as the Chrome Web browser and ending agreements that make it the default search engine on devices like Apple's iPhone.
Microsoft got off the hook when Bush II took office. Tech in general took that as a sign that monopolies were fine. That was just starting to be reversed when Trump took a second term and here we are.