Cheap labour in other countries isn't an infinite resource, I've seen estimates that in about 40-50 years the difference will be gone: China and other countries

Cheap labour in other countries isn't an infinite resource, I've seen estimates that in about 40-50 years the difference will be gone: China and other countries that currently have cheap labour will have become so enriched that they will have a middle class and social makeup similar to ours, and not so cheap labour anymore.