Which of the following is NOT true about the 'proprietary lock-in' according to the passage? A.IBM's dominance was based on its proprietary lock-in. B.Microsoft established a lucrative monopoly centered on its proprietary operating system, Windows. C.In the new era of internet services, it is hardly possible for Google to establish proprietary lock-in. D.Google laeked the proprietary lock-in to remain on the top of the ranking.