The existence of a government do not mean it is desirable. It is an act of authority on people. When people are enlightened and can choose for themselves and govern themselves, the power of governments to arrogate themselves the power shall wither away - but the secretive regimes are fearing just that - they do not want their citizens to be informed or enlightened and are a regressive influence to the progress of humanity.
Unless you have got a sustainable plan for maintaining a vacuum, you can reasonably assume that nature will fill it.