Those are called "cut models". Nothing is immune.
Buy a Sony television at Walmart, and you're not getting a Sony. You're getting a Sony
badge; that's all.
Sony sells their image under a specific contract allowing Walmart to purchase approved items from another manufacturer (who generally uses whatever parts are available at the time) and have them branded with Sony livery after production.
You can't have a genuine Sony television for less than the price of an entry-level new car, but millions of "Sony Televisions" sell every year.
This is why you don't buy things on Black Friday. All those "Door Buster" deals are cut models lined up after summer production runs with leftover parts from various manufacturers.
That's actually why Vizio is often featured. Their business model is to cause a number of Chinese factories to work together to produce a line of leftover parts televisions twice a year.
That's how my mother ended up with a 27" 720p display with calibration features worthy of a unit five times the price; none of which actually worked.
The same goes for tools. If you want the real stuff, you have to know where it comes from.
As an example, there's Porter Cable, and then there's
Porter Cable. You can't get the good stuff off a shelf at Lowes, just as you can't get a riding lawnmower manufactured by the company whose livery is plastered all over the hood.
Specialist retailers exist for a reason. That's where the real stuff is sold.