No, their government isn't full of crooks and thieves. It's far worse, the Iranian government sincerely believe that they're actually making their citizens' lives better by what they do. Material riches won't soothe them:

  Of all tyrannies, a tyranny sincerely exercised for the
  good of its victims may be the most oppressive. It would be     
  better to live under robber barons than under omnipotent 
  moral busybodies. The robber baron's cruelty may sometimes 
  sleep, his cupidity may at some point be satiated; but 
  those who torment us for our own good will torment us  
  without end for they do so with the approval of their own  
  conscience.

  C. S. Lewis