There's a bit of an implicit post hoc ergo propter hoc fallacy going on with this article. That is, if someone quits their salaried job and incorporates, then they'll make more money. I think the likely conditional for most entrepreneurs is "if I incorporate a business to do X, then I'll make more money." I think a lot of entrepreneurs have an X in mind before they start their business (which is not to say it doesn't change, but, still).