Somalia doesn't have statelessness, it has an overlapping collection of theocracies and despotisms. The main exception is Somaliland in the north, where there's been a functional breakaway republic for years and there's a noteworthy level of prosperity. Somaliland has been completely unable to secure any kind of foreign recognition, largely because if it gets it, it ruins the claim that the vampires at the IMF have to shakedown the Somali people to repay the loans made to the Barre regime. The upside of this lack of recognition, however, is that the Somaliland government hasn't been able to get foreign aid, which, as it turns out, suppresses development rather than fostering it. But condemning foreign aid to governments of low income countries is about the only conclusion one can reasonably draw from the twenty-first century Somali experience, it doesn't speak to the efficacy of statelessness at all (either way).