This picture represents how Cornelius Vanderbilt controlled the entire railroad system. He could charge any price he wanted and caused western settlers to not make any money. Settlers couldn't send lumber or other goods till the government regulated the price. It also represents how powerful he was because he's the only one out there with a railroad system. It contrasts to big business because he was considered a robber baron.
This picture represents how Teddy Roosevelt wanted to break up the standard oil trust. He wanted the government to be more involved in regulating prices of goods. He is known as a "trust buster". The picture also represents how powerful the big businesses really are. They just care for themselves and not for the people. The trusts just want your hard earned money.