This assumes a trend toward product commoditization. However, I believe the opposite trend is actually taking place: toward product brands. https://medium.com/@thecraigmartin/the-greatest-threat-to-re...
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?