It is worth looking at the reasons for inequality in Sri Lanka, and comparing it with recent US history as it relates to the distribution of wealth and in that the article in the New York Times by the well respected economist Joseph Stiglitz is worth a read.
In the US he states how the system favored the Banks and Institutions over the people, and this resulted in wealthy being assisted over the poorer sections, which had an adverse effect on the recovery, and if for example some of the breaks went to home owners, over the lending institutions, then the recession would NOT have been as severe, and so many people would not have been left with negative equity.
The same issues do not arise in Sri Lanka, but there are just as important if not more, issues at the heart of why inequality is growing exponentially, and there appears to be NO effort by the Govt. of putting a break on this process.
Even compared to the US, that is now insisting that US citizens, where ever they maybe are tracked and their income and bank accounts monitored so that all sources of income are ascertained and if taxes are due they are tracked and collected. So the US has high income tax rates, capital gains taxes as high as income taxes, and there is duty on the estate one leaves behind on death as well as lifetime gifts that are made. There are very strict controls in the system to ensure the tax net falls all around, and the taxes are collected. SO there is inequality rising even despite the wealthy being taxed at every corner, and I have NOT mentioned sales taxes on almost everything that is purchased.
In Sri Lanka except for taxes on essential food stuffs that hit the poor, a regressive tax, there is NO tax on the rich. Simply put Sri Lanka is the biggest tax haven on earth where wealth is not only protected, without taxation this will grow at rates in multiples to that of the US. Due to their being NO tax files on most of the wealthy Sri Lankans the overall tax net that people get caught in is negligible leading to extreme situations where the wealthy can double their assets in a year with NO tax paid during this amassing of wealth.