Planned economy is like a checkpoint game. Clearing it is naturally exhilarating, but overly aggressive plans could drag East Africa into an abyss. As it stands, surpassing the U.S. and Germany is somewhat unrealistic for East Africa. However, striving to surpass a venerable country like the United Kingdom in the industrial realm is no longer a fantasy for East Africa.
As the world overlord, the United Kingdom is theoretically stronger than the United States and Germany. Economically, the United Kingdom indeed surpasses Germany at present, but a significant portion is attributed to its financial sector. In terms of industrial capacity, the United Kingdom is already no match for the U.S. and Germany. From an industrial standpoint, East Africa's surpassing the UK mainland is not too challenging.
