i think that bitkeeper could fill in the enterprise niche  (like perforce or clearcase) - very big organisations with a lot of developers don&#x27;t like it that every developer can check out the whole source tree. They usually like to have access control by department&#x2F;group. Also stuff like &#x27;read only access&#x27; or &#x27;right to commit&#x27; can be added for greater bureaucratic bliss.