Seems fair.

Sens. Bernie Sanders, I-Vt., Ed Markey, D-Mass., and Kirsten Gillibrand, D-N.Y., on Thursday introduced the “Make Billionaires Pay Act,” which would tax tech’s top leaders tens of billions of dollars in wealth made during the pandemic.

The “Make Billionaires Pay Act” would impose a one-time 60% tax on wealth gains made by billionaires between March 18, 2020, and Jan. 1, 2021. The funds would be used to pay for out-of-pocket health-care expenses for all Americans for a year.

The rest of the story:
Sen. Sanders proposes one-time tax that would cost Bezos $42.8 billion, Musk $27.5 billion by Lauren Feiner (CNBC)