That is a good point, but I'm in no way disputing that Google could do a great job of creating their own libc. I would never be foolish enough to challenge the merit of Google's engineers, the proof of this is clear in the tasting of the pudding that is Google's software. My concerns lie in the open-source community becoming further beholden to Google, or even worse with Google dictating the direction of development on what could become a cornerstone of the architecture of many critical pieces of software.