Your welcome!
I suspect those organizations favoring blogging are later than Late Adopters, i.e. Laggards who are extremely risk adverse. Blogging has now been proven to not cause chaos in the form of lawsuits, lost customer accounts, embezzlement, etc. Twitter is unproven to those risk adverse executives. College IT Departments are also Laggards. They did not adopt on-campus email accounts until email was a has-been replaced by texting, tweets and Facebook updates.

If those executives are really pragmatists/Early Majority, they would do more than accept blogging - they would use it to solve problems, increase teamwork, save expense, improve efficiency, etc.

Thanks for writing such a thought-provoking post and follow-up comment!