The Arabs began to lose power as they went back to their Qabilism.
The Somalis are very similar to Arabs in fact in Africa the closest language to Arabic in sound and accent is Somali. The Somali are pastoralist nomads that have a strong culture of Qabilism.
Because Somalis do not unite as one they are easy to be taken advantage of
If Somalis unite as one people (SomaliUmma) no European border will stop them. So I don't see any good thing in Qabilism if we need to combat Oromunna trying to steal Isaac land
The reality is true Cushites and true Semites are naturally Qabilisitic.
Without Ethiopia oromunna would be dead!
As Feyissa said welega would be Sudan and Guji be Kenya and Bale/arsi/Hararghe as Somalia . Oromos would fight each other naturally as Qabils... addis would not exist... bole airport too would not exist
The legacy of Oromo fighting each other as clans is shown when Welega and Jimmans fight each other Welega leading Terrorist OLF Bilisumma(Freedom) Party and Jimmans leading PP Bilisigna Party