Compared to former French-colonies, France doesnt have any control over the DRC. Its only the USA that controls DRC, since its independence in 1960, forcing Belgium to let DRC go, being along with Belgium behind Lumumba's murder, putting Mobutu on power with help OF the CIA and using Mobutu as puppet to fight communism in Central Africa. The same USA dumped Mobutu after 1990 looking from then for a new puppet. Belgium used to have control over DRC until that Mobutu took the power in 1965, they tried to come back with Joseph Kabila in 2001 but it didn't work because the influence of USA was to big. Now you got a kind of cold-war in DRC between China and the USA about the control those coltans and other minerals. The USA are furious the way Joseph Kabila gave China the most markets in DRC.

Rwanda isn't supported by Belgium and France. They are supported by the USA and U.K. Btw they are in conflict against France because of the Rwandian genocide, that's also why Paul Kagame decided to make from Rwanda an Anglophone countries, deciding to quit the OIF, but for some strategic reasons they rejoined it last year.

Rwanda has the role that Zaire used to have in the cold war by controling neighboring countries. Zaire was behind those coups who put Museveni & Habyarimana on power in Uganda and Rwanda. The army of Zaire even helped Habyarimana to stay in power by figthing against Kagame's FPR, forcing them to return back to their base in Uganda. Mobutu also financed and military supported UNITA and FLNA in Angola. Zaire didn't profit from the money USA gave them and their minerals because Mobutu killed the economy with the Zairisation and was only letting his family, clan and the political elite profit from it, also the huge corruption was putting the economy more and more down.

About musicians like Fally,Werrason,etc. not being rich has nothing to do with the politics. Its all about Soneca/Socoda, those tv, bars, radio channel not paying the taxes and piracy being very strong and those people doing being protected. If all that stuff was fixed than they would have been rich like artists coming from Ghana and Nigeria who are protected by the governement and being forced to do matolo, selling songs to donors, touring months long in Europe to survive.

Don't forget that Rwanda is just smal country. Its just the half of the Kongo Central-province, so with the money they make with all minerals coming from Nord Kivu, South Kivu, Maniema and the Ituri-province its very easy to develop their countries.

Dr Congo is to big. The federalism is a better way to govern the country, like Germany, USA, Russia and Nigeria, instead of a central governement in Kinshasa. Because those politicians don't cares what happens in the Equateur-region, Bandundu, province-Oriental and Kasai. They only focus on Kinshasa, Kongo Central and Haut Katanga. But some people are against federalisme because they fear that it can split the country in the future like Yugoslavia. Tshombe and Kasa Vubu were working on a constitution that had to bring federalism in Dr Congo to govern the country after years of war, back in 1964 with "La Constitution de Luluabourg", with the 6 province having a kind of autonomy and Kananga (then called Lualuabourg) having to become the new capital. But the coup of Mobutu blocked it and Mobutu himself was against federalism.