Some products will always remain predominantly in the category of a commodity. And probably all products will have a commodity category. But I think overall the trend is toward beloved brands for more and more things which were once commodities, like mattresses or reading glasses. And when Brands are sought, retailers/aggregators are just more expensive middlemen.
My beloved brands keep getting eaten up by big brand knock offs like Amazon Basics, or, keep getting bought out by the big brands.
I would love to see this happen with mattresses actually. Buying a mattress is currently ridiculous. Why do I need a guy in a suit showing me around like I'm buying a car?! What's the difference between these mattress brands that I have never heard of. I'm not loyal, because it's a one time purchase every ten years. The brand I purchased last will probably no longer the exist next time.
My latest eye glasses were purchased at the grocery store optical centre, not a mom and pop shop or specialized brand. Much cheaper that way, and good quality. I wouldn't be surprised to see Amazon take over this category as well. Hasn't Walmart already?