>>1541) That's pretty vague, but I'll try to work with it.
2) Of course this exploitation you worry about is distasteful, but unless they're being forced to work against their will, there's no ethical problem; their suffering is their own responsibility. A market which is not centrally controlled has unlimited potential for competitors to offer better working conditions to attract employees, and people will choose whichever position best fits their personal needs and priorities. Many people choose to work in "sweatshops". Let them.
3) A corporation is a legal entity formed in part by the limited-liability legislation passed in the United States in the early 1900s. What that means is that the government recognizes a legal fiction identified as the "corporation" which takes legal responsibility for the actions of the people within the company. If somebody sells cadmium-laced toys, the people who made those decisions cannot be sued by the harmed parties. You are forbidden by government law from seeking justice. Only the corporation can be sued, and so the responsible parties do not experience the consequences of their decisions. This allows them to socialize costs and privatize gains, which is where a considerable portion of corporate abuse comes from.
Other sources include intellectual property laws, licensure laws, and central economic regulations that only large established firms can afford to comply with, preventing competitors from entering the market.
Companies could and will exist, but corporations, by virtue of being dependent upon central government for their existence, could not exist absent that central government.
4) The assertion that companies must grow is unfounded. There are hundreds of thousands of small businesses in the US alone run by people quite content to maintain their current size. Sure, some companies would expand, but this is not necessary, and it should also be mentioned that many companies–even large ones–shrink and even disappear entirely.
One way to consider the wages issue is to remember that every sale is a purchase and every purchase is a sale. You buy currency with your labor, and you sell your labor for currency. You are a trading partner, and as such you have to come to an agreement. If you've ever had a job interview, you've probably heard them ask what you're willing to work for. This is an important step in the employment process: you're setting the price of your own labor. If they're not willing to pay it, you can go find someone who is, or lower the price. It's your choice. Everyone has this choice in a free market. Just as jobs are scarce resources, so is labor. You have bargaining power, especially if you're skilled.
In a free market, everyone is working for what they agreed to, and if they become dissatisfied with the arrangement, they can leave. General demand for higher wages drives wages up.
As for the Google army thing; the US military, the largest military in the world, doesn't have anywhere near the manpower needed to control its population. Sure, they could just carpet-bomb us, but that's a game they can't win. They need us for revenue. The only thing that keeps them in power is the general delusion that they are necessary. A society where people have personal, practical experience as to the lack of necessity of government would be extremely hard-pressed to recreate that delusion. Furthermore, Google (and especially a information technology firm like Google) couldn't possibly maintain the stranglehold on the market that it does now, since it would be trivially simple for other companies to just copy their business model and try to do it better. They'd be up to their necks in competition. Further still, the fact that so many people are afraid of this army thing happening means that they forsee that possibility and would be willing to pay for a service of their own to specialize in securing them against it.