Fig 1.
Overall framework for cost-benefit model.
Fig 2.
Life cycle of models for firms A and B.
Table 1.
Specifications of the 4th, 4th-derivative, and 5th generation iPhone models.
Fig 3.
Scenarios according to the Innovativeness Degree of each model.
Fig 4.
Quality failure probability when t = 0 (see Eq 8).
Fig 5.
Net Profit of firm A and B.
Fig 6.
Net profit changes with different β1, which is related to the innovation coefficient p.