Democracy is not the solution to the problem of Nigeria. Nigerians don't care about who rules them or how long these leaders stay in power what they simply want is good governance. Most countries in Africa practice democratic government where the citizens vote for their leaders but these voters become disappointed because of corruption. African politicians are heartless criminals who derive joy from seeing people suffer and die in poverty. Libya under Muammar Ghadaffi had one of the best economies in the world but it was not a true democratic nation. The late leader of the North African country ensured that the citizens of the country enjoyed good living conditions.
Nigerians will enjoy the rich natural resources they are blessed with only if they can force these corrupt but powerful politicians out of power and conduct free and fair elections. And it can happen through revolution until the citizens engage in fearless protests, nothing good will come out of the acclaimed giant of Africa.
You make a lot of sense, I believe the problem of Nigeria is not about Democracy, even if Nigeria stops democratic rule of government, with bad leaders there'll be no change, that's to say that the problem of the country lies with corrupt government, not only the politicians but other arms of government like the executives, Judiciary and legislators. If you watch closely all arms of government in that nation is corrupt making it difficult for them to progress.
When Nigerian citizens sit up and challenge it's government stop listening to their lies and force them to make the right decisions then I think there would be a change in the countries economy and all other sectors, Nigeria is blessed with alot of resources but with corrupt leaders and their won't be a change until all those corrupt leaders are kicked out.
Lastly I'll say that a country where the richest people are politicians cannot grow economically, the bad thing is that these bad politicians invest in other countries economy while they impoverish their citizens making the economy to crumble, well there are still good leaders in the country but the bad ones are more superior and much more than the good ones, hence the unstable economy and poverty rate, which has increased the crime rate in the country.