I'm a fan of the GPL etc, but in this article he is saying that in 2011, most of the complex AGPL software that would be useful to Google has a substantially similar version already implemented inside of Google. That's something I could believe about Google, especially 9 years ago.
"MongoDB is probably the most prominent AGPL project, he said, but it replicates software already used within the Google back-end infrastructure. Google uses a proprietary custom-built distributed database known as BigTable. The company has repeatedly indicated that it will not open source BigTable, but it has published a research paper on the platform, and its basic ideas are now used in open source platforms such as Hadoop HBase and Cassandra.
In similar fashion, the company has not open sourced core platforms such as the Google File System (GFS), its distributed file system, and MapReduce, its distributed number-crunching platform."
He also made this quote:
""If you look at the interior of Google and how we make software, we don't launch a lot of software to the outside world," he said. "With the AGPL, you have to be very, very careful with how it is expressed. Otherwise you have to invoke the sharing in many different places. [The ban] is really about saving engineering time."
This part sounds like a partial truth and a partial lie. I'm sure it does save a little on engineering time, but it seems odd not to acknowledge the elephant in the room that they may have to share software they don't want to.