> I have spoken to too many Apple, Microsoft, Facebook, or Google employees that are convinced that sharing their source code would be tantamount to death. The result is a world where their secret software controls the news we read, the ads we see, the people we talk to, and even the emotions we feel.

Can you make a counter-argument to this? Let's even just focus on Facebook and Google core's core offerings: What benefit would Google get from open sourcing their indexer, ranking algorithms, and core search software? What benefit would Facebook get from doing the same with their ad-matching and timeline/recommendation software?