This is gloomy, if troubling potentially fraught with long-term complications. Nations and companies do, and can invest in infrastructure projects in other nations, a good example being Istanbul Airport, but there is the contemporary history of Ethiopia-Somalia to consider.
Let us not chop off the nose to despise the face.
Why not try the Garacad business model instead?
I was not in favour of Berbera or Bosaso being leased to DP World, mind you a world-class port authority managing over 60 in 40 countries incl. some of the busiest in the US. Ethiopia has neither the capital, nor resources nor the proficiency to develop or manage ports.