John and Andrew were very similar in the ways they had achieved financial greatness. It probably helped that they had both started working at a young age. These jobs would then prove to be helpful later on, having teached them important lessons with money and such. Though of course moving up, there would be competitors. They both wanted to remove of their competitors, and so they did. Along with it, they had created monopolies within their businesses, allowing them to grow.
Hope this of use. It was correct on ed, and it includes everything that it has in the sample response, just reworded.