>I find this to be an impossible problem because everything that any consumer could possibly want already exists.

I find the opposite. Almost every business is a unique mix of requirements and theres usually few if any existing perfect solutions.

Businesses often don't know that they are overpaying for one service or another, or are doing something in an extremely expensive manner.

The best sales engineers look at a business, sell a product that saves their customer a significant amount of money, taking a slice for themselves.