In a continent long shaped by resource wealth that rarely reached ordinary hands, Nigerian billionaire Aliko Dangote has opened Africa's largest share sale to the public — offering a stake in the refinery that quietly ended Nigeria's dependence on imported fuel. For as little as $4 a share, citizens can now claim a small piece of an industrial achievement that took a decade, cost $19 billion, and reshaped the country's energy story. The offering raises a question as old as capitalism itself: who gets to own the infrastructure that defines a nation's daily life?