The developed countries developed their industries in isolation and with protectionism, now economics says to other countries that they should focus on other st

The developed countries developed their industries in isolation and with protectionism, now economics says to other countries that they should focus on other stuff and let some piece of industry be dependent on other countries industries. It may work sometimes, say if you're developing other stuff that is equally valuable, if you're not then it seems like a better deal for the one who got to develop their industry. Brazil is a very good example of this, we mostly sell low value products and consume high value products from other nations, doesn't seem like a recipe for development.