Product design question

Give me an example of the biggest mistake in product strategy of a successful product that led to its downfall.

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What this question tests

Strategic judgment: recognizing how a strength can become a liability if a market shifts, using a real example.

How to approach it

  1. Pick a concrete, well known example, for example Blockbuster's reliance on late fees and physical stores as streaming and mail order DVD rental emerged.
  2. Explain the original strategy's logic: physical stores and late fees were highly profitable and matched the market at the time.
  3. Identify the blind spot: the company optimized the existing model instead of investing early in the emerging streaming or subscription model.
  4. Explain the downfall mechanism: a competitor with a lower friction model captured the market shift while the incumbent protected its legacy revenue.
  5. Draw the lesson: a strategy tied too tightly to a current revenue stream can prevent a company from responding to a structural market shift.
  6. Connect the lesson back to a general principle: watch for when your core profit center becomes a reason to avoid necessary change.

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