It is Albert Einstein who is quoted, although possibly apocryphally, as saying: "Everything should be made as simple as possible, but not simpler."
This is a good maxim for everything in life. But not, it would appear, if one is trying to demonstrate one's excellence and superiority in the field of finance.
The corporate finance needs of most firms are simple. They would like to be able to borrow money when needed, and they would like to remove uncertainty – hedge, if you like – when it comes to planning and forecasting cash flows and budgets. These uncertainties arise essentially in the field of interest-rates and FX rates. The product range does widen out of course – manufacturing companies may wish to protect against a rise in the cost of raw materials, much as airlines may wish to hedge against rising cost of aviation gasoline – but pretty much that's it. The above describes almost all of the financial market needs of most companies.