A couple of days ago we reported that Spotify is filing a complaint against Apple with the European Commission for unfair practices. Spotify claimed that Apple made it difficult for companies like Spotify to compete fairly with Apple's own services on the company's platform by putting artificial restrictions and ever-shifting goalposts. Today Apple fired back with a post on its website claiming to address Spotify's claims. The post, attributed to no one in particular at the company, comes across as a little too aggressive than what we have come to expect from this otherwise mild-mannered...