The first article references the BILLIONAIRE investor George...

The first article references the BILLIONAIRE investor George Soros, that you quote as driving investment to Sri Lanka.

“Today, there are speculative forces in the markets much bigger and more powerful. And they will be eager to exploit any miscalculations by the British government or British voters. A vote for Brexit would make some people very rich — but most voters considerably poorer.”

Further, let me quote the Sri Lankan President...

"With the heat of the referendum starting to be felt, Sri Lanka's Prime Minister Ranil Wickremesinghe too, expressed his ideas over the matter and said that Sri Lanka is very concerned about the probable impact of the referendum.
The concerns of the Sri Lankan Premier appeared to be legit as the country has strong economic ties, not only with the UK, but also with the EU. According to the Central Bank Annual Report, 10% of the total exports from Sri Lanka goes to the UK while another 19% goes to the countries in the EU. That means almost one third of Sri Lankan exports go to the EU including UK. In that context, one can argue that possible fallout of UK or EU can adversely affect the external trade of Sri Lanka. However, it can also be argued that EU and UK will continue to trade with Sri Lanka, in spite of UK leaving the EU."

http://www.ceylontoday.lk/columns20160321CT20170330.php?id=256

No area is isolated, everything is intertwined and there are interdependencies....