Temporarily they do. Once the Argentinian car industry is gone, however, they can safely jack up prices again knowing that bringing it back will be very, very hard. That money will leak out of the country, driving down the Argentine peso, making Argentines poorer overall.
>Theres another thought around this topic: that you can destroy an industry, and then increase your profits later on as a sort of monopoly power to recoupe the initial investment. IT would never happen that way: the moment prices rise up, investors would flock again to the argentinian automotive industry and take those profits away.
The flagrant gaping hole in your argument is the presumption that you can build a car industry overnight. It takes decades and requires a lot of investment. The Japanese government threw a not insignificant portion of its GDP at its car industry before it even started showing promise.