Your positioning context sets off a really powerful set of assumptions about who your product competes with, what features your product should have, who the product is intended for, and even things like what the product should cost.
most products could easily be positioned in multiple different market categories, with different competitors, providing a different value for different kinds of customers.
Good positioning sets off a set of assumptions about my product that are true. Bad positioning sets off a set of assumptions about my product that aren't true - leaving your sales and marketing teams to do the work of undoing the damage your positioning has already done
The 5 Components of Positioning: 1) Competitive Alternatives 2) Differentiated “Features” or “Capabilities” 3) Value for customers 4) Target Customer Segmentation 5) Market Category