It's a well established fact that these transnationals can push the LEDC governments to change legislation in thier favour, with the threat of simply moving business elsewhere for a lower production cost. But remember, it's the governments of these LEDCs that have the final say, just allowing the scaremongers at the transnationals to trick them. Your theory that no government would have it in thier power to stop them is proposterous. Even at the very worst, they could simply become isolationist and nationalise all foreign owned business, a la Fidel Castro.
But think about it, suppose Nike didn't like the deal it was getting in Thailand, and moved production to somewhere else (been done before). Would the people of these countries feel better then, with no income at all? I think not.
The benefits of capitalism still outweigh the negatives. Communist governments have never contributed anything to the world except genocide and games of economic catchup.
=Communism does not benefit the human race.