Some critics argue that state-level wealth taxes, like California's proposed one-time 5% levy , are inefficient revenue tools because billionaires are highly mobile. Unlike many Americans, this economic class can pack up and move if they need to.But the trend is particularly visible among the ultra-wealthy, who face fewer practical barriers to relocation than middle-income households. Particularly with high profile cases dominating headlines, such as with Meta CEO Mark Zuckerberg's real estate movements (3) ...