The door for this has closed quite a while ago. These days with a laptop and a internet connection there are a lot of things you can learn and do.
Basically we lowered the barrier to entry big time.
In fact many of us have a job today because of this low barrier to entry.
Now to expect the door be shut right behind us is in a way morally wrong. Nor the way how things work.
It took me a while, but I think I've developed enough architectural and soft skills to not be lumped in the pool of easily outsource code slingers.
It is always a question of price and achievable quality. One works against the other, partly.
This is somewhat beside the point, however. The people my hypothetical steel-industry manager is based on failed to imagine how the world was going to change and could not imagine that people in less-developed countries could be as competent as themselves.
Then there is AI. It has taken a long time, but it is coming.
It's about money.
If I'm an American developer, I want as few developers to be available so that my wages rise.
If I'm BigCo, I want as few competitors selling the same products so that my prices can rise.
What's hard to understand about why people would support these types of movements?
It's as simple as "I want more money and I don't really care about other people who's lives I'm not experiencing."