Hello Firn

Well the situation could be as you mention if we still were in the 80th. Today there is internet, cellphone coverage, skype... Lubumbashi is one computer click away from Kinshasa.
By not securing Lubumbashi, Kabila just demonstrated to investors that he has no grip even on the crown jewels. This is rather a sign of weakness and incapacity to govern.
Also, Kabila does not have a couple of decently rewarded capable units among his army. The last events in North Kivu where the battalion trained by the US has been found guilty of mass rapes demonstrates that FARDC are not capable, even those who are trained and paid by US; belgium; China; RSA; France; Angola...

DRC Prime Minister can say at will that you do not take Lubumbashi with a couple of AK and an handfull of machetes... The Mayi-Mayi Bakata Katanga just did it! That's just not a good news for investors. Especially when you are at the same time reviewing the mining code to increase taxes and you impose a ban on raw cooper exports. It is rather the invers (ensure investors that you can secure their money) DRC government should do.