Dubai, Saudi Arabia, Indonesia, Jordan, Afghanistan and The Emirates are good examples of how Islamic clergy has the exact same flaws as Christian clergy. Dubai especially is basically just an Islamic version of America. I assume this because read enough history to tell that our respective cultures are equals.
The Qu'ran prohibits all profit margins, same as the Bible. Profit comes from usury, it comes from the lending and usage of debt, equity and borrowing. What you're saying isn't true. In fact, the entire profit drive of pretty much every index in the world derives from the lending rates of the US federal reserve, which is basically credit without any currency. It's the deepest and most fundamental usury that's humanly possible. You don't use your own money to invest in capitalism, that wouldn't work.
And I know this because I use the stock market to make thousands of Euros and then give it back to the poor people it was stolen from. I'm an extremely successful trader, I can create profit margins in a week that most hedge fund managers would barely be able to put together in a year, and Islamic countries are some of the most profitable markets I've used.
So if they don't steal from the poor, then how come I'm able to give so much back to Muslims in Islamic countries who have been robbed by the wealthy?
I highly suggest doing it before making assumptions. What you read is propaganda, you have to test it to make sure it's true.