As Yazdi had mentioned, you are creating a Utopian society. Such an altruistic ideal is what we all want, but reality dictates that we must work with what we have.
For example. You cited Capitalism as being greedy and selfish. I would disagree. I believe that in general, humanity is inherently selfish. Capitalism is an attempt to harness the inherent flaw in our nature, and using it for the greater good. Trying to fight what is part of human nature, trying to create this false pardigm, will only create another miserable wreck of a failure, no different then the Soviet Union.
The global financial system needs reform, not doubt. But why throw out the baby with the bath water?!?! Capitalism works, but with the right reforms in place.
Again. The problem isnt is in implementation, whether or hurried or gradual. The issue here is that we have to first understand whos version of Sharia one is to establish. Since your talking about a divine law, there is then very little flexibility in how it is to be interpreted. Those who are convinced of their version, will never allow the implementation of another law, because to them, such an interpretation would be an affront to the divine. Unlike a secular, which can be amended, implementing and amending laws based on religious doctrine is nearly impossible.
Western societies, that promote fairness and justice, do not all “praise man” or promote “ego.” America for example, puts “In God we trust” right on its money!
Besides, any society that promotes Islamic virtues of justice, peace and fair play, etc, regardless of whether they praise God or praise man, are still pleasing god, because God does not need praise from humanity. God does not yearn for mans praise, he simply wants us to do what is right. It is not God who yearns for our praise and approval , it is we who should hope God praises and approves of us.
Now I would agree that a person who focuses his attention on praise of God, through namaz (a sort of meditation), and does what God has deemed pious, can lead a virtues life. However, I dont not see this happening on the level of an entire society. there are inherent flaws in all men, that will creep up regardless of how God centered the society he lives in is.
The societies you cite, that were role models, weren’t always such role models either. While in general, the Islamic empires were very tolerant and progressive, they also had many flaws. We fool ourselves into believing that the golden era of Muslims was a Utopia, when even then there were many many problems. Except those issues are overshadowed by the many accomplishments of those same societies.
Good leadership who give people room to be living without fear of them: I see this in most democratic countries today. And most are non Muslim and secular.
That leadership instill values of ethics in to society by education and media encouragement: Also see this in the West.
That people learn to favour competing for nobility over competing for wealth: Good luck with that one.
That various organisation CEOs try hard to earn wealth for the motive of giving more in charity… Hmmm… There are many philanthropists… Bill Gates, Warren Buffet, both big contributors.