There are very, very strong consequentialist arguments for libertarian. You can appeal to security without resorting to the communist-style rhetoric which nearly all American workers of current times easily dismiss. The bad side of capitalism is the fact that those who are born poor and who lack the will to pull themselves out of poverty, will form Governments that coerce the rest of us into paying their way. The bad side of capitalism is also that workers often get taken advantage of by rich capitalists. I am not making a point in favor of unionism, just pointing out that there evertything has a good side and a bad side.
Labor loves Marxist drivel.
They will accept the Marxist notion that the value of any good is the labor put into making it, long before they will accept the Libertarian notion that the free-market is the be all end all solution to the exploitation they feel they are under. I am suggesting that libertarians frame their accurate and substanciated consequntial arguments in terms that the worker is already familiar with and in favor of. The American laborer still feels that Government is his friend and Business is his enemy. I can go on and on and on. All of those things equals security to the American worker and by and large he is in favor of them.