But protectionism is often good and necessary for a country's economy. If country A cannot produce a good x, then another country B can stifle A's technology growth for producing x by selling x outright at a cost A can not produce the good at (yet). If you ban the import/restrict of x from country B, you will have to pay some fixed costs to get the production of x up to speed; but you will end up with cheaper unit costs in the end. The catch is, you can not ban all imports outright because importing the technology to produce x will probably save you years on R&D and related costs. Like everything in economics, doing things are good and bad at the same time.
