It's not a ruling. It's an administrative decision. And it's not dangerous. It has nothing to do with trade wars. Even insinuating that this is somehow a corrupt decision that takes aim at American companies is just way off. This decision has been several years in the making, and Google was told to stop their illegal conduct in April 2016.

EU treaty article 102 is about as clear as it gets. Google even had precedence to look at. And finally, they were warned by the EU commission more than 2 years ago but chose not to comply. This is a company with hundreds of lawyers on staff, and with the best law firms on retainer.

The fine is huge, but it's a small fraction of their revenue. This fine is measured based on guidelines that have been the same for more than a decade: https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:52...