Well I'm not sure what you have been referring to, but there has been this one major tech-related anti-trust case in the EU recently, and it revolved entirely around abuse of market dominance:
The EU website should have all the further answers you need, all the cases, translated into all the languages, and the regulations written down in relatively simple language (you don't need a lawyer to understand). It's really all there:
Well, your “examples” was concerning the “market” for search engines where Google is the dominant player. Not some made up market of “search engines you can access by going to google.com”. The same type of “market” you are trying to make up for iOS.
