What was one of the POSITIVES behind Standard Oil becoming a monopoly, showing that they aren't always bad?

Explanation:

monopoly is a business that is the only provider of a good or service, giving it a tremendous competitive advantage over any other company that tries to provide a similar product or service.

Some companies become monopolies through vertical integration. They control the entire supply chain, from production to retail. Others use horizontal integration. They buy up competitors until they are the only ones left.1