As an example, with agreements between Canada/US and similar culture it would be very easy for your company to start hiring remote workers in Canada. Suddenly due to currency differences their salaries are 30% cheaper, and with a strong social safety & gov. subsidies likely even cheaper for similar talent.
Then some time later after your company has had success with some international workers they branch out farther and hire a few juniors from South America in the same time zone. Repeat this cycle over the next decade and now salaries have been eroded even for high paying information workers.
I'm starting to feel globalization is a race to the bottom for everyone but the owners.