I've once heard about decentralized alternatives to eBay and Amazon where you can buy/sell items online without middleman. OpenBazaar and Parcl are among several alternatives aiming to transform e-commerce. While they've gathered a lot of attention within their early days, it seems the concept of a "decentralized marketplace" is fading away as the industry shifts into "meme" coins and NFTs.
Are tightening regulations one of the reasons why decentralized marketplaces aren't taking off? Considering what happened to Silk Road in the past (although not truly-decentralized), it's likely such projects will remain a "niche" forever. Too bad because this had the potential to radically change e-commerce for the better.
Thoughts?

I don't really know what the decentralised E-Commerce means! There has to be a seller who would source the product from someone and sell it through the marketplace. It's not always possible that the manufacturer itself sells the product through such marketplaces. So not sure how would you remove the middle man from this game!
Also e-commerce cannot happen in anonymity. The receiver will have to inform necessary details in order to receive the product. I don't think that decentralized market places can exist.