The language here is some of the most insightful I’ve ever seen on the subject, if I’m interpreting effectively. (I could just be extrapolating.)
You cannot make a living as a “writer.” That is — the ability to effectively (or even extraordinarily) arrange words has no inherent value. It’s a good start, however, for some of the writing professions in which you can.
Journalist, copyrighter, editor, even poet or (now) blogger can be lucrative, technically. But you should never, ever launch into any of them expecting to profit in the near future. (For the latter three, probably near-not at all.)
I can’t think of a single notable author who considered fiction a money-making pursuit, and there’s reason for that: if you set out with the consideration of your audience required to write-for-profit, you’re going to end up with something generic and still unprofitable. And — if there is any objective ideal for a creative work — is it not originality?
Forgive my self-promotion, but I recently spent a good many words around this subject, sorta. (Keep in mind that they have no inherent value.)