A ruling today by Europe's General Court on whether Alphabet's Google should face a record EU antitrust fine of US$4.4 billion (RM19.9 billion) for using its Android mobile operating system to quash rivals could set a precedent for other regulators looking into its business practices.

Google will be looking to reverse its fortune after losing its challenge to a €2.42 billion (RM10.9 billion) fine last year, the first of a trio of cases, while EU antitrust chief Margrethe Vestager (above) needs a win following setbacks in cases involving other tech giants like Intel and Qualcomm this year.

The competition chief of the European Commission has cracked down against Big Tech with hefty fines to ensure a level playing field in the 27-country European Union.

Vestager is currently also investigating Google's digital advertising business, its Jedi Blue advertisement deal with Meta, Apple's App Store rules, Meta's marketplace and data use and Amazon's online selling and market practices.

A court judgment against Google, a dominant player in the phone market along with rival Apple, could impact some of these cases, especially in terms of whether the EU antitrust watchdog should take into account the rivalry between the two giants.

The European Commission in its 2018 decision said Google used Android to cement its dominance in general internet search via payments to large manufacturers and mobile network operators and restrictions.

Google said it acted like countless other businesses and that such payments and agreements help keep Android a free operating system, criticising the EU decision as out of step with the economic reality of mobile software platforms.

Pan-European consumer group BEUC, which backs the commission, pointed to the importance of the court judgment.

"It is crucially important that the court confirms that Google's behaviour for all these past years was illegal and cannot continue, thereby ensuring that consumers can benefit from a more open and innovative digital environment," BEUC director-general Monique Goyens said.

Even if Google wins, it will have to halt the practices singled out by the commission under landmark tech rules known as the Digital Markets Act that will apply next year, aimed at curbing the powers of US tech giants.

The parties can appeal on matters of law to the EU Court of Justice, Europe's highest.

- Reuters