They are comfortable with the laws and investment choices of their own country. They are familiar with the economic policies, the customs, and the brokers and financial counselors they typically deal with. Many feel that it is easier to monitor and control their investments, and liquidate holdings quickly, if necessary, when those holdings are in their own country. These would be sound reasons if the return rate on investments was equal among countries, but unfortunately, as noted, it is not. There are also tax codes to consider.
Some countries offer tax advantages in an attempt to attract foreign investment.
Others have favorable interest and exchange rates. Each nation has different regulations, tax structures, and exchange restrictions, along with national laws and customs. Before investing, you must compare the investment opportunities offered by other countries and find the ones that best fit your financial goals while at the same time offering solid returns and safety. When considering any investment, you must always remember that there is a risk. There is a downside.