to point to this quote...but the reason I said that was the price of $600-$700 was too high," he says he did not realize the business model innovation that Apple was going to deploy, using the carriers to subsidize the phones by building the cost into the customer's monthly bill. Free and open source software In July 2000, Ballmer called the free software Linux kernel "communism" and further claimed that it infringed with Microsoft's intellectual property. In June 2001 he called Linux a "cancer that attaches itself in an intellectual property sense to everything it touches". Ballmer used the notion of "viral" licensing terms to express his concern over the fact that the GNU General Public License (GPL) employed by such software requires that all derivative software be under the GPL or a compatible license. In April 2003 he even interrupted his skiing holiday in Switzerland to personally plead with the mayor of Munich not to switch to Linux. But he did not succeed with this and Munich switched to LiMux, despite his offering a 35% discount at his lobbying visit. In March 2016, Ballmer changed his stance on Linux, saying that he supports his successor Satya Nadella's open source commitments. He maintained that his comments in 2001 were right at the time but that times have changed. Google In 2005, Microsoft sued Google for hiring one of its previous vice presidents, Kai-Fu Lee, claiming it was in violation of his one-year non-compete clause in his contract. Mark Lucovsky, who left for Google in 2004, alleged in a sworn statement to a Washington state court that Ballmer became enraged upon hearing that Lucovsky was about to leave Microsoft for Google, picked up his chair, and threw it across his office, and that, referring to then Google Executive Chairman Eric Schmidt (who had previously worked for competitors Sun and Novell), Ballmer vowed to "kill Google." Lucovsky reports: Ballmer then resumed attempting to persuade Lucovsky to stay at Microsoft. Ballmer has described Lucovsky's account of the incident as a "gross exaggeration of what actually took place". During the 2011 Web 2.0 Summit in San Francisco, he said: "You don't need to be a computer scientist to use a Windows Phone and you do to use an Android phone ... It is hard for me to be excited about the Android phones." In 2013, Ballmer said that Google was a "monopoly" that should