I'm struggling to find the comparative question from Meta Server Fault - but I believe there is a ruling down a similar vein as to this.
Taking this question as an example. It begins with
in a client's website
Which immediately implies the person in question is looking to profit from the answer someone else takes the time to provide.
I understand that the omission of this comment wouldn't somehow make it any more likely the OP wouldn't profit. But its presence may make people either reluctant to answer; or provide answers of low quality.
As a business, we love to contribute to the community and are big participants on SE sites. But personally, I take offence to answering a question for them (for free) knowing that they'll be charging someone else for the same information.
I'm not sure exactly what the best solution is, whether the question is edited to suit - or deleted outright.