Would you consider being a contract killer (i.e. a hitman) ethical? What about being a creator of CSAM? Because those are both examples making money by providing others with what they want. And if we followed free market principles to their logical extreme then both of those would be allowed.

I think most people would agree that this would not be even remotely ethical. Nor would it lead to higher living standards than a more restricted market economy.

A fundamental requirement for free markets is the absence of use of force or fraud. Another is that it applies only to legally consenting adults.

Both of your examples are not free market examples.