a) In real life try explaining to your SO/kids that they must abandon their existing life because you want to save 2.25%.

b) Assuming there was some flight out of the city good news! We can solve this by increasing state and federal income taxes. We can even tax capital gains and dividends at income tax rates. There is more than enough money to pay for the things we need to pay for.

(It is probably wise fiscal policy to exclude the first 1 million in investment income from capital gains as a way of encouraging small investors and those just starting out. If I were King I'd exclude the first 1 million in wages too, with a graduated phase-in and make it up by taxing people with $1 billion or more in assets+income combined).