Russell, we're seeing the exact same pressures on "Made in Canada" ... the whole thing is consumer driven. A free market economy is the purest form of democracy there is. On a moment by moment basis, we consumers vote on our supplier of choice with our $$$. If we tell the market place that lower prices (regardless of country of origin) are more important than domestic production values, then they get the votes i.e., money.
Savvy consumers will go to the next level, to make sure the quality + price = best value. Or they may be motivated by more wholistic factors, like buying local, ethical sourcing, sustainable production practices, etc. Unfortunately, a great many consumers only look at the price tag, and don't bother to educate themselves about the quality issues. For most people today - dealing with limited disposable income - hard choices often have to be made, involving a compromise of some sort. Those consumers will almost always opt for a lower price at the expense of quality, because they cannot afford the better one.
So that's my "macro economic" rant. In short, each of us as consumers is responsible for the dwindling domestic manufacturing sector. However, we pretty much had limited options ... it's that simple.