Wait till your Owner/CEO/CIO gets a cease and desist notification from $MegaCorp just because one of the whiz bang employees left major holes in their home network. It happened to the company where I work, and fortunately I am not the engineer responsible for the network. We had a policy that allowed for the very "openess" you want. The network and systems engineers had warned the owners but they were "put in their place" because they were "preventing" money making employees from doing their job.
In our case on a Friday evening one of the owners received a call at home from a BIG legal firm representing $MegaCorp informing him that he must immediatly cease distributing their copyrighted IP or face $MM in legal costs and loss of our "good name". Panic ensued and the network and systems engineers spent the weekend finding out what had happened, plugging the holes, and the following Monday trying to not say "I told you so".
The moral of the story: We plugged the holes, re-wrote all security and systems policies. The "openess" is now gone, replaced with tightly controlled environment. Sales are up, profits are up, and no more threats from $MegaCorp.
The offending person, well he had egg on his face and is now happily compliant with corporate policies and providing excellent service to his clients.