My worry is what the EU changes might mean for the mobile web and beyond. With iOS’s market share and only the same rendering engine Apple used in Safari being available, sites/apps had to support more than just Chrome. If forcing iOS users to Chrome is an option (either through pointing them to the browser or an app built with that rendering engine), then there’s even less of an incentive to test with anything else. It’s great that users get more choice but if providers use it as an opportunity to reduce support for other browsers then it might not be a great benefit after all.