The Saudis have a historical trait making them comparable to cockroaches and they never disappear. And the Ottomans and Egyptians ways of handling the House of Saud has always been to swap them around, only for another branch of the Saud family to come back and take revenge for their father/brother being killed.
The basis of the Saudi family, Wahhabism isn't really even unique to them and based primarily on the popular jealousy of the Hedjazi Bedouin of many of all the other Muslim nobles who go on Hajj, their pilgrimage marked by then playing boastful music to flex their power and wealth over the Arabs. The House of Saud is just one of the most powerful cliques in Central Arabia.
They're not strictly a heresy bent on exploiting pilgrims. Robbing and exploiting pilgrims has been a time honored tradition since the middle ages. Their iconoclastic movement is just being mad at Egyptians, Syrians, and Turks coming in with their drip and massive entourages and playing music which was considered bad at the time for many of those Bedouin tribes.