What you are saying is that people should shut down all industry to meet some arbitrary standard set by you. Things like whales, trees, and food (made on the land that was clear-cut) are exported to other countries, and other goods come back in return. That's how an economy works. You gather stuff you have, you send it out, and in return you get stuff that you can't gather yourself. Some countries have whales, some have trees, and some have food.I didn't say anything like that.. You are the one trying to suggest that people will die of lung cancer by age thirty if we don't allow massive deforestation and the continuation of over harvesting of our aquatic life.
You can't just shut down all trade, shut down all industry, and expect people to live better lives through magic.
Sure some people in third-world nations are still poor, but if you shut down all of their industry and expect them to not touch any of their own natural resources (like trees), what are they supposed to trade? Nothing? Do they remain third-world countries forever? You may use Mexico as an example of a place where some people do use low budget technology and have no electricity (true), but a lot of Mexicans do have electricity, and computers, and every other thing you have in your own home. If they had no economy, like you are requesting of them, then all Mexicans would be poor.