I think countries with relatively inexpensive labour like China, India, and Mexico, will not agree to raise the cost of their labour because inexpensive labour is currently the comparative advantage in international trade that is increasing their standards of living. Also, if we increase tax rates on our corporations many of them will then be outcompeted by companies from jurisdictions with lower tax rates and also many of our companies will also move to jurisdictions with lower tax rates. I think we should follow the path currently taken by the social democratic countries of northern Europe and maintain competitive corporate tax rates while providing our populace with the best social programs in areas such as education, health care, transportation, recreation, and housing.
I disagree with your list of three countries becuase what these countries have in common is a desire to orient their economies away from lowest base labour -- particularly China. China wants a labour economy that looks more like South Korea and Japan than Malaysia and Vietnam.
China , while it would never say this, has an active policy to follow the road Japan took a few decades earlier and go from a country specializing in cheap products to one with the best technology and products and workers making more money. While many low end products are made in China still, this policy is advancing and Chinese workers are less able to compete with workers in Indonesia, Malaysia, Cambodia and Vietnam and others on price. Chinese workers are increasingly getting better wages than many other Pacific countries. China is a massive economy and it takes time to turn it around, but there is a steady push to move into competing without the lowest global labour price. It is true that relative to North America Chinese labour is much lower but the trend lines are not to compete based on labour price but on the quality and value of their labour.
Mexico entered NAFTA with one objective of increasing its labour value and this is happening slowly. I think the country may want to price lower than the rest of North American but they are not trying to be the global bottom of labour.
India has a policy of expanding its power in specific areas especially services. While they are the most behind of the three countries they also have expressed a desire to increase wages.
The other countries I mentioned that you did not mention are the ones that do not have a policy of desiring to be able the lowest wage countries.
China is the countrie with the strongest stated policy on wage improvement in the world at this time. I woudl see them attempt to manipulate currency before they would abandon this. It looks like they are making state investments in both education and technology in order to increase the wage potential of workers. This is a stated government policy that has seen considerable action so it is clear it is far from an empty promise. I believe that there is strong evidence that the Chinese government really does want its population to be individually well off.