“At the end of the day, protectionism is rooted in fear and pessimism: fear that we’ll be outcompeted, and pessimism about the idea that a growing, dynamic economy can make us all better off. Libertarians are fond of making just such claims—so fond that Cass coined a term to mock us for it. Instead of tussling over the size of different constituencies’ relative shares of the fixed economic pie, the libertarian view is that our goal should be to grow the pie so everyone’s share is bigger. Cass calls this “economic piety,” and he rejects it. For him, the goal is not to grow the economy; it’s to direct the economy for the benefit of deserving constituencies such as blue-collar workers.
This is pure zero-sum thinking. It cements in place a mindset where one group’s gains necessarily come at some other group’s expense. To libertarians, technological innovation is a boon because it makes the whole economy more productive and everyone richer in the long run. But some people usually are hurt in the short run—think of the proverbial buggy-whip salesmen when automobiles come along. Protectionists are inclined to be suspicious of the tech sector and sympathetic toward policies that would tamp down economic dynamism in the name of protecting the would-be losers. The result, inevitably, is stagnation.”