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There is Product Category A, Product Category B, and Product Category C. In each of those categories there is a "best" product.

But a company may not have the bandwidth to release in all three categories. So it may choose to focus on Product Category B, and the best implementation for B, and leave A and C (for now). Even though there are "best" implementations/ideas available for A and C.

Sometimes it is not possible for a company to walk and chew gum at the same time.