The other component in the Harbor Freight vs. Milwaukee equation is innovation/R&D and the associated costs. I could name you 10 innovations Milwaukee introduced into the market within minutes. I can't do that with Harbor Freight. One reason Harbor Freight can sell at lower prices is they have very low development costs. They simply purchase existing products, reverse-engineer them, and produce them.
Having worked in the R&D world for decades, I can tell you that those costs can be extraordinary. If we give too much patronage to Harbor Freight, pretty soon Milwaukee's no longer profitable, and all that cool innovation will stop. Also, reverse-engineering often times misses lessons learned in the R&D process, resulting in products that look similar, but either don't perform as well or aren't as durable.
At the scale of a company like Milwaukee, this problem would take a long time to kill the company. However, for all our favorite TJ parts makers, this problem can be devastating. Imagine putting your blood, sweat, tears, and tooling costs into a cool new product that took a year (or more) to bring to market, only to have some folks in China buy one, quickly "replicate" it, and sell it for such a low price that you can no longer sell yours because you'll lose money. I've heard Mr. Blaine lament about this more than once, and for good reason. It's devastating and de-motivating...
On this forum, we do a pretty good job of supporting these niche TJ parts makers, but when it comes to big companies like Milwaukee, we don't seem to give the same deference. Makes one ponder.