Dr. Robert Hare is describing what a psychopathic corporate culture might be like, not what all corporations are.
Corporations can have personalities if you will, based on the character of their leadership, and the traits and tendencies which they tend to seek out and reward.
Is there a difference in culture between Costco and Walmart? Why might that be the case? How about the difference in treating the customer between St. Jude's Children's Hospital and Goldman Sachs, both putatively doing "God's work?" Do they seek certain personality types, and tend to cultivate and reward different behaviours? Not all hospitals are altruistic and caring, and not all financial firms are the same. Does Goldman Sachs have the same character as Charles Schwab? How about Bank of America and Edward Jones? Or BP and Whole Foods? Why might they be different? Or is it all just marketing and image?
Governments may have also have character traits, whether they choose to call it culture, or tone, or philosophy. Certain behaviours are rewarded, and others are suppressed and discouraged. Quite often a few like-minded and powerful personalities may set the character of the organization, and choose subordinates who are either servile or of a simple mind. Is there a difference between a government run by Franklin Roosevelt and Adolf Hitler? Do their differences affect the people whom they attract and the behaviours that they reward?
Corporations are not people, and do not deserve the rights of people because it grants to the corporation mangers, those that actually give life to a company, a power that makes most other individuals unequal under the law. It is an extension of power and rights by proxy, greatly leveraged.
If an individual has a voice, the individual managers of a major corporation can obtain a much greater voice, one applied by the power and money of a large organization. These are the modern übermenschen that we are unwittingly raising like titans over the world of real people.
And when they are singularly amoral, or focused for anti-social purposes, or criminal activities, the resultant damage of which they are capable can be devastating, not only to individuals, but even to towns, cities, and small nations.