During the Progressive era(1890-1920) of America, Big Businesses were getting too powerful and out of hand, but luckily there were a band of men and woman who went toe to toe with this foe.
Most Big Businesses such as Rockefeller's Oil Company were huge monopolies controlling everything in their Business, crushing every opponent in their wake. What makes these monopolies so bad is because they make the poor only more poor and the rich even richer, prices would be sky rocketing in what they would be selling, salary's would be cut super low for workers, further more corrupting our economy.
Another huge problem with Big Businesses is Patronage, Patronage is when someone is chosen in a important position in society/work and you are chosen not because of skill or professionalism, but because of personal bias. This only corrupts our workforce in the future. Many workers and politicians are hugely affected by this issue, primarily because it makes it nearly impossible to get a job you want without any social connection and not only that, our 20th president died completely because of this issue.
But don't fear there were Progressives who stood up against these giants, one them goes by the name of Theodore Roosevelt. Theodore Roosevelt plans to create the next set laws to stop these rampaging company's from corrupting our society and everything we stand for!
A huge solution that helped society against Monopolies was the Sherman Anti-trust Act, this act did many things to combat against monopolies, but sadly the act early on wasn't effective since it wasn't very reinforced, later more acts help support this act controlling monopolies.
The 16th Amendment came to be to stop further more corruption from patronage, and for the most part it succeeded, taxing the rich and less of the poor seemed to help stifle patronage in its tracks. America might be a lot different today if it weren't for our savior's of the Progressive era, people probably would be a lot more corrupted than today, businesses would have equal to or more power than the government.