This is something I hear a lot of (overwhelmingly) American people say, after which I am inevitably reminded of poor healthcare, food deserts and exploitative corporate practices. At this point those are all so entrenched in the "american experience", I don't understand how you can say unironically that "the market" is a fix for anything or does in any situation "work well".

It's a superpower, and it is in it's entirety an example that disproves that this is the case.