Marketing myopia occurs when a company focuses too narrowly on selling a specific product rather than fulfilling customer needs. This narrow focus can cause companies to miss opportunities and fail to innovate as customer and market conditions change. Marketing myopia affects industries by limiting growth and creating an uncertain future as companies ignore shifts in customer lifestyles and the emergence of substitutes. Successful companies avoid this by maintaining a customer-oriented approach, conducting market research, and continuing to innovate even as market conditions evolve.