Companies really don't want/need to be transparent

For years, I have been advocating, educating and pleading for increased transparency in communication inside the firewall. Thinking that most of the issue had to do with change management, not seeing the benefits of transparency and employee engagement, and just learning what the technologies and techniques have to offer, I really have been ignoring the main barrier/obstacle - It isn't always in the companies' (read leaders? Board Members? Leaders? Partners?) best interest to increase transparency - keeping information close and among a few tends to reduce risk, right? Fewer people know of XYZ issue means only those few people had either the opportunity or responsibility to act. If you are an internal communications professional, it probably make you shiver to think of just anyone participating in the message - not just offering an opinion and/or insight but also having the opportunity to help create the message without going through committees of approvals.

Recently, I was working with a group internally who are drafting (by committee) blog comments coming from leaders in the organization. I simultaneously had requests for us to alter code in our blog system to allow for "delegate" access to comments so that someone could post blog comments in the name of the leader. Both of these conversations left me feeling not only have I not succeeded in getting across the message and importance of authenticity and transparency but also that the methods and beliefs of leaders and internal communicators is much stronger than my or others' desire for a more open workplace. Is it the leaders who don't "have time" for such communications channels as blogs (or even posting an encouraging blog post comment) or is it a case of communications leaders not wanting them direct access to employees in this way? Both?

Not sure where I'm going with this, but this is one of those KMUANs I have.

[KMUAN - Keeping Me Up At Night]