Nomadic Somali culture is a rich culture that has created the rich and ancient Somali oral tradition of poetry and sayings.
Furthermore, trading communities in coastal villages have an ancient seafaring and trading history and cuisine. Nobody taught us how to make delicious goat meat or seafood, nor did we adopt our Beden boats from foreigners.
I can go on and on, but I believe the foreign influence in Somalia is probably overstated. We just don't know how to log our own history or toot our own horn.
In fact, Somalia's trading/business history is very rich, didn't we bring coffee to the rest of the world from Harar? Didn't ancient Somalis convince the world that we had the best cinnamon in the world? Look up the "Cape of Spices".