How do different product strategy options, such as differentiation and low$-$cost leadership, align with the objectives of product decisions? Considering the goal of product decisions to create value for customers while achieving sustainable competitive advantage, discuss how each strategy contributes to meeting these objectives.

Take a company case, such as Apple Inc., and analyze how its product strategy $($differentiation$)$ has enabled it to fulfill customer needs, maintain market leadership, and generate long$-$term profitability. Compare this approach with a company that employs a low$-$cost leadership strategy, highlighting the trade$-$offs and implications for competitive positioning and profitability.