I've had a first look at the latest data on companies in DRC, provided by the World Bank . The data is part of a new wave of surveys published by the World Bank and other sources, giving very detailed quantitative descriptions of business operations, finance, and experiences.
An attraction of the DRC data is that it follows companies over time, surveying the same firms in 2010 and 2013, which allows people to see how they are changing and why. A quick investigation of these companies shows that for every one company whose government ownership has increased, about seven companies have seen their government ownership fall. The Congolese economy seems to be becoming more privately owned quite quickly, if this data is representative. I'll have a proper look soon.