<i>What I&#x27;m essentially saying is that at this point, it has already become much harder for something like a Wine for OSX to be created. Because developers will have to prove &quot;fair use&quot; in court</i><p>You&#x27;re wrong, that hasn&#x27;t change at all as a result of Google vs Oracle.<p><i>Thought experiment - what would be Wine&#x27;s fair-use defense ?</i><p>Interoperability, see for example <i>Sony v. Connectix</i>