In contrast to competitors, Amazon may be benefiting from the recent closing of the de minimis loophole.Amazon's (AMZN 0.78%) quarterly earnings release on July 31 led to a cooldown in investor sentiment, a shift that has since persisted. Shares in this "Magnificent Seven" component have been more volatile since the report's release and are effectively flat over the past three months. Concerns about the future growth of Amazon's AWS cloud computing segment have been a key factor behind this.Worries about th ...