Passage Summary: There is a historical rule that says if you use power badly, society will eventually take it away. Therefore, the only way for a business to keep its power is to be socially responsible.

Conclusion: A company must act with social responsibility if it wants to maintain its power for as long as possible.

Reasoning: History shows that society eventually strips power from institutions that use it in ways deemed irresponsible, a process known as the Iron Law of Responsibility.

Analysis: The speaker treats social responsibility as a strictly necessary condition for retaining power. To weaken this, we should look for an answer that suggests a business could potentially hold onto power through other means, even if it acts irresponsibly. Perhaps the 'long run' mentioned is so incredibly long—centuries, as the text says—that it doesn't actually serve as a practical deterrent for a modern firm. If a business can remain powerful for its entire relevant lifespan while being irresponsible, the speaker's 'must' starts to look a lot less certain.