This pattern means that important information is kept secret from citizens. This is useful when hiding corruption, nepotism, money laundering, smuggling, vote buying, tax evasion, etc. When information is kept private there is less chance that malfeasance can be noticed. With Opacity in place, over the years elite business and governments can distance themselves further and further away from any controls on them.
Opacity prevents people from seeing how business and governments actually conduct their affairs. This encourages corruption because there is no oversight.
It can also establish this as a habit which ultimately can be seen as the "natural state of affairs", the way things are actually supposed to be.
How it works
Keeping things from the public eye can be maintained through laws or habit. Sometimes when there are transparency laws, a government can designate things to be secret in order to maintain state security. It is interesting to note that even if there is transparency, societal apathy can mean that corruption and other crimes can continue without interruption.