The economic utility of earning a philosophy major is something other than the need for philosophical activity in all fields of human knowledge.
But if you think about it, an BA in philosophy could be quite advantageous for a psychologist seeking to get hired.
I would hire based on his degrees in psychology first, but YMMV. If you can believe what you read, such as the case of Occasionally-Coherent’s degrees in economics and international relations, what’s being minted aren’t towers of intellect. LOL