The Arab Spring had dried up a long time ago. There were no palatable regional alternatives to the Islamists, no philosophy with a regional grip that could counter it,
All it takes to understand why the Arab Spring was doomed to turn into an Islamic Winter is that Muslims in the Middle East and North Africa were being asked to choose between a Socialist left and an Islamic right. The left has consistently lost open elections in Europe and America, it lost the battle of ideas in Russia and China, and unsurprisingly it also lost the Arab Spring.
The left wields power in the West only because it has managed to seize control of political and cultural institutions. Those institutions are used to maintain a death grip on the national dialogue, to criminalize dissent and to feed money to its supporters who are often literally paid to continue supporting it, whether in government contracts, welfare checks or organizational benefits. If the left did not have its media, its unions and its flow of supportive immigrants, then it would be just another bunch of cranks.