As tourism increases to a region it brings a rise in foreign investment which not only can harm local small businesses but often the revenue generated doesn’t stay in the host country.
This is particularly common in the least developed nations that often don’t have the ability to produce goods locally or to finance tourist infrastructure development so the host country must rely on importing many products and overseas investors.
According to UNEP, for every $100 US spent by tourists in the least developed countries, only $5 US remains in the local economy.
It is estimated that 80% of tourist spending in small island nations and 70% of money spent in Thailand leaves the country due to tourism leakage.