Why would you want to control some business documents and not others.
Simply putting the company logo, document title and a revision status on the document it makes it controlled.
Not all business documents require the same level of control. Its all about status and importance. The more important the document is the important it is to control it.
For a lesser important document simply putting the company logo on it, a title and a revision status is perfectly adequate provided each time its changed, the revision status also changes. This level of control is suitable for probably 90%+ of all business documents.
We have a marketing person who I have told, only needs to ensure the documents that go throughout the company or to the public have a name and revision status in the file name on the server or in the document if that is appropriate. I told that person that what is of greater importance is that the document content is approved of by the powers that be before its published and or distributed.
Documents used in project execution, well that's a different story.