I think you need to read a little more history. People haven't changed their core nature in the past 40 years. Look at Carpetbaggers, the Triangle Shirtwaist company, and William Hearst for relatively recent examples. Further back you can look at The Dutch East India Company, the Knights Templar, and the various and sundry monopolies that have arisen throughout history.
People are driven to acquire capital initially to meet their own needs, then for power. There always have been people and groups of people who strive for the latter, not being satisfied with the former. Romanticizing long dead business owners may play well in movies and books, but it isn't reflective of human nature.