why the whole Arab world always failed to over-throw dictatorship?

Phoneix as an example saudi arabia they satisfy most of the peoples needs i.e food, housing etc.

Most people where not happy with the fact they have monarchy which is so dumb and backward and openly squandered the wealth, but because the people has there needs satisfied the hatred towards ruling elite was luke warm for some time.

Today different situation the people openly hostile to the regime and even the amerikkans know that al saud has limited lifespan and are there ready to install another hand picked regime backed by US military.

So the situation can change very quickly even in this example the peoples needs are met but they still hostile against regime. Again because of the police state in saudi arabia you do not hear of the daily riots and hostility towards the regime there.