This claims that companies shouldn’t be criticized for their actions because they’re following an efficient model. In contrast, the stimulus defends companies on the grounds that they’re being criticized for failing to perform an impossible task.

This reflects the principle that people shouldn’t be criticized for failing to perform an impossible task. Since it’s not possible for nuclear fusion to produce enough energy, the author concludes that it’s not fair to criticize utility companies for not using fusion.

This defends the food industry on the grounds that their methods could potentially reduce food prices. The stimulus defends companies on the grounds that the task they’re being criticized for not performing is impossible.

This establishes that the school system may have excluded computer studies for a good reason, but the stimulus establishes that a particular task is impossible to perform.

This defends CEOs by arguing that they may sometimes refrain from using their specialized knowledge because it isn’t relevant. The stimulus defends companies by establishing that the task they’re being expected to perform is impossible.