I think it is worth noting that historically, land-locked countries tend to be less well-off than its counter parts. Examples such as Switzerland & Austria are an abnormality due to a variety of unique factors that have only occurred in Europe so far.

Overall, the rule of law, regulatory environment and open market of Uganda and its neighbors are not at the level needed to to maximize its potential. This, coupled with the cost of borrowing (think interest rate), asset risk (E.g, forfeiture, robbery, piracy) and a few key negative economic indicators (Major balance of trade, current account & gov budget deficit) can put a dent in a country's mid-long term success.