Expansion problem of economic disparity

The gap between rich people and poor people opens more and more and becomes a social problem. People who have become rich in Asia, USA, Europe also do not reduce their wealth,I am planning to emigrate to countries with low taxes. Puerto Rico has lowered its tax rate since 2012 and is attracting wealthy people. Tax exemption from the sale of the shares, set corporate tax as low as 4%, invite. In the United States it is said that tax of about 20% will be added to the gain on the sale of shares. But for Puer...