How to win the war on the Left?

The following quote is a part of the second comment to this post on the Mises Institutes's blog:

The free-market advocates continually lose to the interventionists because the latter rely on a 'moral' position, namely that it is right to redistribute wealth. Until we compete with a different vision of what is right, they will continually win the war of ideas, which is primarily on the moral plane, and secondarily on the theory and facts of economics.

This comment should strike every libertarian-leaning mind in the very heart of his world-perspective. How is the public won? How can libertarians increase their ever diminishing influence in the public debate? Is the method really to leave logic and reason and attack the feelings and morals of the public? I would hate to see that happen!

How was the Soviet Union removed of its credibility?

The question of how to spread out the message of Liberty always haunts me. Most people just want to go to work, earn their pay and use it to improve their lives and do well by their family and friends. Not so many read economics and political theory. That is why the Left has gained too much ground. The Left understands that sound logic and reason and good economic theory is simply not interesting to the general public. That is why they use ever-shifting moral and emotional arguments - arguments of State intervention and soaking of "the rich" to benefit "the poor", which in the end only soaks everyone and keeps the poor poor!

It took a 50 year battle of intellectual persuasion to convince the leaders of the Soviet Union to reduce the stranglehold of the State. It took a little shorter time to start that process in China. Are libertarians wasting their energy by focusing on sound logic and reason, and by using a very slow-working instrument of economics and political theory? Should they reduce to the emotional simplifications of the Left?

I wonder, and I worry that this is the case.