Final answer:
Maintaining a differentiation strategy relies on continuous innovation and creating distinctive, appealing products that outshine competitors' offerings, enabling temporary above-normal profits.
Step-by-step explanation:
The keys to maintaining a broad differentiation strategy include a focus on constant innovation to maintain an edge over competitors and to develop differentiating features that strongly appeal to consumers.
Additionally, it's crucial to create distinctive products that stand out in physical aspects, location, intangible aspects, or perceptions. As highlighted by Greg Lee's sentiment on Samsung's commitment to innovation, it enables a company to temporarily earn above-normal profits and captures consumer interest with unique product characteristics.