Billionaires abound in California. Why not tax their wealth?

According to a report by The Straits Times… Sept 20 – No state may be a more natural fit for a tax on billionaires than California. The state leans left politically, needs funds for healthcare and is home to as many as 250 billionaires collectively worth upwards of $2 trillion. complete report is on link below. Source: https://www.straitstimes.com/world/billionaires-abound-in-california-why-not-tax-their-wealth