I think if you look back through time, the history of income, wealth and taxation is full of surprise. So I am not terribly impressed by those who know in advance what will or will not happen.

Having a decent share of the national wealth for the middle class is not bad for growth. It is actually useful both for equity and efficiency reasons.

When inequality gets too extreme, then it becomes useless for growth, and it can even become bad because it tends to lead to high perpetuation of inequality over time and low mobility.

Thomas Piketty Quotes