As a pro songwriter all my songs are written for profit. Of course, when I started writing this wasn't the reason and therefore I consider my subsequent writing as not for that reason either, although I do get paid for my work. Should we, according to your stricture, dismiss the great painters as sullied by money and only regard true painting as amateur daubs that nobody wants? A song not sung is a dead song no matter why it was written. The songs that resonate with "the folks" will become folks songs in the end.