I didn't miss it. From what you quoted in the above post:
"Obviously, knowledge of these differences and access to the better options are factors."
That's a big part of it. The demographic in question goes to the sporting goods section in Walmart or wherever. He sees a cool design for cheap and buys it. He might or might not weigh it against the other options in front of him. He probably doesn't pull out his smart phone and do a bunch of research. He may draws upon his own experiences with this pool of brands but who knows if he's ever had anything "decent", if he knows how to sharpen or actually does, etc.
This guy might not know that the 3Cr13 in Walmart's Ozark Trail brand is junk (or that the mystery steel is 3Cr13). He might know that the Gerber or Kershaw in the glass case are better. That might be based on brand or price, as opposed to the 7Cr17Mov and 8Cr13Mov respectively. Hopefully, he'll have a chance to learn it through use over time. Hopefully, he'll learn as he keeps buying and using those knives. Then, let's hope that he eventually does go online, tries something new, and has a revelation. Maybe this forum will help him get there.
BTW, I know this can happen. It's pretty close to my own story. The difference is that it happened to me before you could get a WE-made knife in decent budget steel for $32.