It prevents coordination? What law book did you read, it is applies to size everyone knows that. Also you can't have a non-profit be a monopoly they would have to be for profit. Look at the American Red Cross they are clearly a monopoly. Dude read a law book.
you don't know what you're talking about. why would you continue to repeat an uninformed misunderstanding once it's been pointed out to you? this sort of stubbornness is remarkable.
nonprofits:
http://www.nber.org/papers/w12132 ("Despite the conceptual differences between for-profit and non-profit firms stressed in conventional economic analyses of the non-profit sector, U.S. antitrust law generally does not distinguish between these two organizational forms.")
coordination:
http://en.wikipedia.org/wiki/Price_fixing ("In the United States, price fixing can be prosecuted as a criminal federal offense under section 1 of the Sherman Antitrust Act")
please, take the minimal effort needed to inform yourself before going out of your way to criticise others. are you a child?