Dear Arif Shah, The renowned jurist and economist Nani Palkhivala once said that the rules of economics are like the rules of electricity. They are good servants, no doubt, but very bad masters. This means that as long as we rule over the economy, it serves us well, but when it starts ruling over us, it just ruins us.
Regarding your query, I suggest you refer to two Nobel Award winners, incidentally, both related to the economics of underdeveloped countries: Dr. Amartya Sen and Dr. Muhammad Yunus. It is difficult to understand the theory they have propounded in a single reading. However, once you grasp the central idea, you begin to understand some of it.
The Idea of Islamic Banking
The idea of Islamic Banking is certainly commendable. The problem does not lie with the idea itself but with its administration. If the players of the bank are prompt, fair, and judicious, the game of banking survives both in good and bad days. However, if the players are corrupt, then the consequences for the bank are clear. There is nothing wrong with any law, principle, system, or concept; the wrong lies with the players, administrators, and implementers.