[epolanski]

Care to explain how is it better for "national security" that some of Google's division have to be sold/spun off into different companies?

What is exactly the threat of YouTube becoming an independent company again, e.g.?

The only thing I see is a loss for Google in revenue and in YouTube in the "quality" of their ads.

None of this has any implication on national security.

[throwaway4good]

It is better for (US) national security that Google keeps its (global) monopoly. (Non-US) competitors to Google would hamper the US's ability to surveil and gather data globally.