[MadIvan]

There is a difference. Spice was only found on Arrakis. The largest single supplier of oil to the United States is Venezuela.

Furthermore, Muad'dib did not actually destroy spice production - his power came from the ability to threaten such destruction. Actually doing it would have crippled him as much as the universe.

Regards, Ivan

[Paul Atreides]

Not to mention that the biggest monopoly in the Duniverse was The Spacing Guild. Without the Spice, the Guild Navigators would become blind, making space travel either dangerous or at a snail's pace.

Another thing that could have resulted from the destruction of the Spice would have been the price of the Spice stockpiled by the Emperor and other Great Houses.