The trouble is – as Fernhout says – a loose use of the word profit.

What we should be talking about isn’t profit but unearned income, and artificial scarcity, with the latter being the more important. If someone earns income by the fact that money is scarce and they happen to own some which they lend out to let others use it, that would be an unfair profit.

Any artificial scarcity exploited by someone to turn a profit would fall into the unwanted category. An example would be a government stipulated and government upheld monopoly and there are many of those: medicine, tabacco, alcohol, and quasi-monopolies like telecommunications, taxi licenses, and I imagine a hundred others, all creating an artificial scarcity of offering leading to the unfair kind of profits…