Competitive Edge: It's important to define your competitors too. One should know, what strategies are being used by the competitors to reach to the potential customers. If you know what your competitors are doing, you will be able to modify the plan and maybe your marketing analyst will come with something more innovative that can capture the mass attention.
What was the outcome? As much as 90% businesses started by entrepreneurs and small business went busted or failed within a year. I experienced one of the many busts few years ago (with my cafe business) because i don't really have a proper and "the few solid sheets" called a marketing plan.