The citizens are not paying tax. That doesn't mean the country doesn't take tax; the tax corporations that operate the country also tax citizens for other things but not on income taxes like excessive spending, and some kind of levies are being paid to the government, which is also some kind of revenue generation for the country. Aside from their oil and gas, tax is essential in every country, but how it's being used is what matters. Nigeria is not supposed to be where we are today in terms of development if our resources are being put into good use.