Turki, son of Ibn Saud does not die in 1918-1919, consequences?

'm presuming we see some analogue of the Grand Mosque seizure but earlier than OTL to force this "Compromising".
Why did they basically give into the hardliners otl, instead of using the seizure as justification for a purge?

And could having a strong single line of succession change that reasoning?
 
Why did they basically give into the hardliners otl, instead of using the seizure as justification for a purge?

And could having a strong single line of succession change that reasoning?
Something to do with an alliance made centuries before?

Also if Turki survives and primogeniture is Instituded I can see the rest of Saida sons being given governorships and there maybe being a civil war when Saud dies
 
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