Lets reasonably assume, as it is in reality, that people are fans of economic autarky. People don’t like to see their fellow country-men losing jobs and settling for relatively lower paying jobs, after the influx of foreign competition, either as increased supplies(which sends domestic prices below the cost of production of domestic firms, thereby making them go out of business) or more cost-effective methods of production in foreign countries(which has almost the same implications–production could be carried on much larger scale before profits get wiped out with decreasing prices).
I’ve also seen protectionists argue that free trade would make products which are cheap in the indigenous country to get expensive, as the produce gets exported to foreign countries where prices that these produce could command are higher. This costs domestic prices to rise.
So, how would you give a proper rebuttal to these arguments? What would you project as the advantages of free trade?
P.S: Lets move beyond the argument that people trade only when they find it beneficial. Protectionists agree to it, but they are more concerned with the side-effects of international competition and price arbitrage(in the case that it increases domestic prices that is).