Many African countries are "Communist"... experiencing the very same level of "failure".
The "failure" of Africa starts with the European powers splitting its territory without concern for locals, that's why African countries are so geometrical. Tribes became split, others merged... a mess for locals.
Using the harvest resources argument is way outdated and doesn't vouch for any side, both Capitalist and Communist governments put the hand there.
I would say quite a few African countries are run under the whims of a warlord / dictator / army chief.
Communism / capitalism wouldn't make any difference to them.