Kalo:
My question is this: if corporations were deregulated, what would keep them from assuming more control than they already do? How do we liberate the government from corporations' influence if we give them unchecked power?
Most regualtions of corporations actually favor large corporations over small businesses.
For example, the ban on raw milk is a tax on small farmers, who can't afford their own pasteurization plant.
The Federal Reserve credit monopoly means that large corporations can raise capital more cheaply than small businesses or individuals.
Sarbanes-Oxley is essentially a tax on small corporations.
FDA regulation of the drug industry means that only a large pharmaceutical company can bring a new drug to the market, because of the huge cost of getting a drug approved.
Corporations are themselves a legal fiction. Corporations separate ownership, power, and responsibility. It is government itself that protects management from misconduct. Tort reform limits punitive damages (see recent Supreme Court Exxon Valdex ruling). Limited liability incorporation protects management and shareholders in the event of bankruptcy. It's usually impossible to directly sue management for misconduct committed on the job; they're usually covered by corporate insurance policies anyway.
In a free market, a group of people can get together and pretend they're a corporation. They wouldn't get any special legal perks.
I wrote more details in How the State Destroys Small Businesses.
This is a common misconception. "Government is needed to prevent monopolies." Usually, government is the *CAUSE* of monopolies.
I have my own blog at FSK's Guide to Reality. Let me know if you like it.