First, you might want to consider the fact that corporations as they currently exist are actually a product created by Government regulations.

But let's examine what a business is. A business typically produces goods or service. Those products must necessarily be in line with market demand or they would not make money and go bankrupt. People voluntarily exchange the products of their own labor (money) for the products that the business is selling. In a free market this a voluntary exchange of value for mutual benefit.

Here's the funny thing. In free markets the price is determined by supply and demand. In Communism this "price" must be arbitrarily determined by the central authority. Socialism must attempt to set prices by mimicking the pricing of private business. In any socialist country, without some private business, they wouldn't have a clue how to determine prices for government services. Socialism and Communism lack the pricing mechanism of free markets and that is why it eventually results in huge shortages or excesses. Read about what is happening in Venezuela right now. Venezuela is a heavily socialist country.

In a free market a business will grow only if they are providing good value to their customers. Yes, they can cheat their way to profits for a while perhaps, but if people feel they are getting screwed then anybody can use that as an opportunity to enter the market as a competing business. Competition is the natural limit to excessive greed and corruption. Think about your logic here. Without government interference please tell us again how a business would "rule the world".

If a business is doing such an exceptional job that nobody can compete with them, then honestly why is that so bad?  

Let me point out something else completely ridiculous in your thinking. You seem to be terrified of free market monopolies, yet have you considered what the government actually is? A government is by definition a monopoly! They are using legal authority to tax you and provide you services of which you have absolutely no choice.

Try not paying your school taxes because you chose to send your child to private school. Try hiring a private security company to protect your property because the city police are completely useless and would rather hand out speeding tickets. In both cases you'll probably get thrown in jail.

Let's say I came to your house when you weren't home and cut your grass without your permission. Then later I sent you bill demanding payment. You didn't pay, so I came to your house and threatened you with a gun. Would that be moral thing for me to do? Of course not, yet that is exactly what government services are.

You need to understand the difference between voluntary and involuntary interactions. Socialism is a system that must implemented and enforced through law (aka force). Free markets are not a system. They are simply what happens when people interact voluntarily for mutual benefit.