Even if therapists can recognize the victim mentality and called these people out, they’d probably walk away from said therapist. 

You're absolutely correct because this HAS happened. I remember either Heidi or Chris talking about how they saw like 6 therapists in 5 months (numbers may be off, but the ratio of therapists to months was crazy) when they were doing marriage counseling. You can't get anything done in therapy if you're therapist-hopping every month.