How did wealth that brought Abbasides power also lead to their downfall?

Abbasids' Greediness Leads to Their Downfall?

The Abbasids had a similar rule to the Umayyads. They extended their borders and their trade also expanded. This led to a variety of foods and others besides that. People from half a world away would even sell their products at the Abbasids' capital, Baghdad. As they grew with riches and power, I thought that they were going a little bit over board. They were soon careless and was ignoring those troubles of the people. As they were laughing with luxury and rose taxes, there was one specific part they were not aware of, trade routes. As the trade routes became more dangerous of bandits and stolen goods, no one would probably go to Baghdad to trade anymore. The Fatimids including Muhammad's daughter, Fatima, revolted the Abbasids as they were thrown off the throne. Soon, the Seljuk-Abbasids would rule the empire. That is why one should not become as greedy as the Abbasids were.

This is a photo of the Abbasid Dynasty as they are enjoying luxury and the man is drinking a cup of wine from a gold goblet.