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.