That's not capitalism, that's culture. In the USA, it's very common to return products because of a change of mind and/or complain. That isn't universal.
The fact that a retailer is willing to accept it despite not being forced to is absolutely the result of capitalism. If they don't, you buy from a competitor. This is not some hypothetical. People in the US routinely choose retailers based on their service experience.
In any case, the overall retail experience is much better on west side of the Atlantic and prices are generally better too, without the need of too many "customer protection laws" so I don't think a good case is to be made to copy from a failed continent.
But, the usual case is that the major companies in the market collude to strip away these kind of offerings, as "free unconditional returns" hurts bottom line of all companies in the market. This is the real power of capitalism.
Think about it, for example the TV sector: All companies colluded to reduce the selection of TVs to "Smart" TVs only. I can't just go and buy from a competitor, because it simply does not exist!
The problem here is just the group that wants them is minuscule. Nobody wants to admit it, but the smart TVs are what people want. You can buy dumb TVs that have no smart features or smart TVs with the smart feature can be completely ignored. Vizio is good for this, but nobody wants to pay for those except commercial units.
TV companies do try adding features that go beyond dumb display panels. Ask them how that worked for 3D, which people didn't adopt. Yes most TVs are "smart" but I'm pretty sure most people won't pay much of a premium and many use something like an Apple TV instead anyway.
The premium paid is the $20-50 that the TV manufacturer gets for preinstalling shit on their smart TV.
Which is why (currently) Vizio is my doge because it just turns on with ARC and shuts off when the Apple TV does so I don’t even know it’s smart.
The stupid Samsung (praise be to the toddler, destroyer of shit tech) wouldn’t even let you switch inputs without being connected to WiFi, or if it could I couldn’t figure it out.
Is that the "usual case" really? I find it very rare actually.
You really think "Smart TV" is some collusion/conspiracy and not emergent from the market behavior? The most malicious theory I can come up with is that Smart TV makes more money for the manufacturers due to the ad opportunity, therefore they sell an inferior product to the consumer —in our minds— similar to bundling crapware in Windows laptops, but that still does not make it collusion or market distortion.
Under that theory, it just means dumb TV would have to be a comparatively more expensive product and I am willing to bet even the nerds who care about dumb TV will be buying the smart one, airgap it, and connect an Apple TV. Effectively no one would be paying even $50 more for dumb version of a TV.
In reality, I believe the average Joe & Jill actually strongly prefer Smart TV.
In any case, the overall retail experience is much better on west side of the Atlantic and prices are generally better too, without the need of too many "customer protection laws" so I don't think a good case is to be made to copy from a failed continent.