And this behavior is somehow sold to the public as a way to boost the economic wellness of the people living under the isolationist programs, but instead it enables profiteering corporations to exert more control over the artificially narrowed market space.
Locking the door with the fox(es) in the henhouse.
In some cases it has improved public welfare as industrial capital demanded infrastructure and education, though of course they also demanded as much of your day as possible for as little wage as possible. And as finance wins out it acts like a parasite on productivity while still demanding maximum time and minimal wages.