LONDON — Google lost its last bid to overturn a European Union antitrust penalty, after the bloc’s top court ruled against it Tuesday in a case that came with a whopping fine and helped jumpstart an era of intensifying scrutiny for Big Tech companies.

The European Union’s top court rejected Google’s appeal against the $2.7 billion penalty from the European Commission, the 27-nation bloc’s top antitrust enforcer, for violating antitrust rules with its comparison shopping service.

Also Tuesday, Apple lost its challenge against an order to repay $14.34 billion in back taxes to Ireland, after the European Court of Justice issued a separate decision siding with the commission in a case targeting unlawful state aid for global corporations.

Both companies have now exhausted their appeals in the cases that date to the previous decade. Together, the court decisions are a victory for European Commissioner Margrethe Vestager, who is expected to step down next month after 10 years as the commission’s top official overseeing competition.

Experts said the rulings illustrate how watchdogs have been emboldened in the years since the cases were first opened.

One of the takeaways from the Apple decision “is the sense that, again, the EU authorities and courts are prepared to flex their [collective] muscles to bring Big Tech to heel where necessary,” Alex Haffner, a competition partner at law firm Fladgate, said by email.

The shopping fine was one of three huge antitrust penalties for Google from the commission, which punished the Silicon Valley giant in 2017 for unfairly directing visitors to its own Google Shopping service over competitors.

“We are disappointed with the decision of the Court, which relates to a very specific set of facts,” Google said in a brief statement.

The company said it made changes to comply with the commission’s decision requiring it to treat competitors equally. It started holding auctions for shopping search listings that it would bid for alongside other comparison shopping services.

“Our approach has worked successfully for more than seven years, generating billions of clicks for more than 800 comparison shopping services,” Google said.

European consumer group BEUC hailed the court’s decision, saying it shows how the bloc’s competition law “remains highly relevant” in digital markets.

“It is a good outcome for all European consumers at the end of the day,” Director General Agustín Reyna said in an interview. “It means that many smaller companies or rivals will be able to go to different comparison shopping sites. They don’t need to depend on Google to reach out to customers.”

Google is still appealing its two other EU antitrust cases: a 2018 fine of $4.55 billion involving its Android operating system and a 2019 penalty of $1.64 billion over its AdSense advertising platform.

Despite the amounts of money involved, the adverse rulings will leave a small financial dent in one of the world’s richest and most profitable companies. The combined bill of $17 billion facing Apple and Alphabet, Google’s parent company, represents 0.3% of their combined market value of $5.2 trillion.

Those three cases foreshadowed expanded efforts by regulators worldwide to crack down on the tech industry. The EU has since opened more investigations into Big Tech companies and drew up a new law to prevent them from cornering online markets, known as the Digital Markets Act.

Google is also now facing pressure over its lucrative digital advertising business from the EU and Britain, which are carrying out separate investigations, and the United States, where the Department of Justice is taking the company to federal court over its alleged dominance in ad tech.

Apple failed in its last bid to avoid repaying its Irish taxes Tuesday after the Court of Justice upheld a lower court ruling against the company, in the dispute that dates back to 2016.

The case drew outrage from Apple, with CEO Tim Cook calling it “total political crap.”
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