This sounds more like a case of rental values of locations increasing, as the price of prime urban land is bid up, requiring laborers be paid more to achieve the same standard of living, and inflating costs across the board.
Same issue that all booming cities face, whether it is New York, San Francisco, London, Hong Kong, Tokyo, or anywhere else.
Beside there is a deficit between export and import leading to currency shortage.
https://www.reuters.com/article/ethiopia-energy-idUSL6N0N91Q...