The Libertarian Party and Big Business

A friend sent me the following link:
http://www.reason.com/0411/fe.dc.whos.shtml

So I read through it and saw all the Libertarian support, and then went back to the Libertarian site (not for the first time), and I'm left with the following quandary.

The Libertarians seem to believe that the government never has the best interests of the people in mind, or if it does, it'll screw it up somehow and cause more harm than good, but that exactly the opposite is true for businesses.

Offhand, it's hard for me to believe that the likes of say, Wal-Mart, Enron, IBM, Worldcom, Monsanto, etc, has the best interests of their employees, customers and neighbors in mind at all times, and even when they don't, they'll cause more good than harm.

Or to put it another way, for me the Libertarian Party would have more buy-in if they took the same attitude they have towards Big Government and applied it to Big Business.