The example I thinking of is the common counterargument to "this job/industry/company is total BS": it can't be BS, because if it was no one rational would pay someone to do it. This presupposes that everything operates in a perfectly efficient market where pay corresponds directly to utility to someone, somewhere.

The 2008 financial crash, for instance, arguably demonstrated that a lot of practices in the finance industry weren't really creating value for anyone, just deceptively pushing up the value of something worthless in order to profit from it. But if you had approached someone making $500k at Bear Sterns in 2007 and said that, it would have touched off a whole string of rationalizations that basically amount to: "I'm being paid a lot of money, so this must be useful, otherwise I wouldn't be so rich" and potentially even "if you are so smart, why aren't you making $500k?"

And it's not just finance. I've had a version of that conversation often with Googlers when I criticize the company's bizarre and inexplicably messaging strategy were they seem to deliberately blow up any semblance of a good product. Their argument is ultimately, "we get paid $200k+ to do this and you work in a power plant, how could you possibly know any better than us?"

That's what I'm trying to get at with "money as merit".