A U.S. judge ruled Google holds an illegal monopoly in online advertising markets, potentially leading to antitrust action.Google was found to dominate publisher ad servers and ad exchanges, impacting competition and harming consumers.The ruling opens the way for potential remedies, such as selling off parts of Google's business.This is the second court ruling against Google for illegal monopolistic practices, following a similar judgement in a case over online search.Google's control over online advertising, search, and ad business has drawn criticism for stifling competition and free speech.The judge highlighted the detrimental effects of Google's exclusionary conduct on publishers, competition, and consumers.There's a call for real competition to be restored in online search and advertising markets, addressing the damaging impact of monopolies.Critics urge users to reduce reliance on Google products and services to combat the influence of monopolies in the tech industry.Concerns are raised over Google's overwhelming power in controlling internet content and advertising revenue, affecting publishers' independence.Antitrust laws are seen as crucial in addressing the dominance of tech giants like Google, aiming to protect fair competition and consumer interests.