Isn't this kind of a privileged perspective though? Not so much saying that something is lost, but judging people for shopping on Amazon (which you said in an earlier comment).
It's easy to say something like "there's more to life than prices!!!!!" when you're a yuppie software person on Hacker News making six figures with full benefits, but a large percentage (most?) of the population isn't as fortunate. Something being five percent cheaper can be a meaningful difference to those people, and I certainly cannot blame someone in that situation for prioritizing their finances over some nebulous completely undefined and arbitrary "greater good" that you seem to be hinting at.
Now, I am one of those software people who (generally) makes plenty of money, so you could reasonably judge me for shopping on Amazon and focusing primarily on prices. I don't know what to tell you; even if I make plenty of money, it's not infinite money, I still have to prioritize how it's spent, and again I just don't feel the need to try and optimize for some undefined greater good.
You're right, and when I say "judging people" I don't mean buying on Amazon instantly means I think you're irredeemably evil, I just mean it's a negative factor in my overall judgment. It can be mitigated by other things, in particular whether the person thinks critically about their Amazon purchases, and whether they take other mitigating action (e.g., voting for government policies that would punish Amazon and similar monopolistic businesses).
What I'm talking about is at least slightly less nebulous than what you describe. My claim is something like "The more that people buy from Amazon today, the lower the expected quality of your own life in 25 years." It's similar to other negative externalities like climate change. I'm not saying someone is satan incarnate for driving their gas car to work. But the less they realize that there are problems with that and the less they take action where possible to mitigate them, the more dubious I'll be about them.
(Incidentally, I'm not "one of those software people who makes plenty of money". I make in the mid five figures with no benefits, so I'm not arguing from quite as privileged a perspective as the one you mention. But my position is still more privileged than many, many other people who can't order from Amazon at all because, for instance, they have no credit card or fixed address. And those people are also harmed by the growth of Amazon as it gradually reduces their options for buying things in person.)