From everything I've seen, the issue basically comes down to a combination of licensing problems, content restrictions, and willingness. The long and short of it is that many people see GoldenEye 007 as a time capsule that has proven to be especially difficult to dig up and preserve.
Film
Official Bond
Bond kills
GoldenEye
Official
47
Tomorrow Never Dies
Official
30
The World is Not Enough
Official
27
Die Another Day
Official
31