Newegg and Walmart have fallen to the same thing Amazon has: allowing 3rd party sellers.
They're not as far along, but going down that path is what causes so many issues with counterfeits and generally poor experiences. I accidentally bought some thermal paste from a newegg seller who shipped it via slow-boat-from-china, and it took weeks to get to me. It was technically listed, but I hate any shopping experience that forces me to be on high alert not to get screwed (as minor as super-slow shipping is).
Target is getting into the 3rd party seller game through Target+. It appears they have a pretty tight process for what gets approved to sell and who gets to sell it. Target by culture is extremely intentional about what they allow on their shelves, and it appears they are following suit with their 'curated' 3rd party sellers.
They're not as far along, but going down that path is what causes so many issues with counterfeits and generally poor experiences. I accidentally bought some thermal paste from a newegg seller who shipped it via slow-boat-from-china, and it took weeks to get to me. It was technically listed, but I hate any shopping experience that forces me to be on high alert not to get screwed (as minor as super-slow shipping is).