How is having the duck.com dns a trust issue? Google could just as easy create some purpose for it and ddg would have a hard time proving that a domain that doe

How is having the duck.com dns a trust issue? Google could just as easy create some purpose for it and ddg would have a hard time proving that a domain that does not have its product name to be inflicting monopoly. Conversely, how does transferring the domain helps Google on court? If they are a monopoly, then surely it isn't because of naming. (I do defy the affirmation that Google has a monopolity at all - Bing and ddg are likely alternatives that anyone can use - it's very different from, let's say, IBM mainframes... But I'm no expert in antitrust laws)