It comes from the incentive structure of the recruiter and says less about the potential hire. Recruiters are often paid a commission for every one of their su

It comes from the incentive structure of the recruiter and says less about the potential hire. Recruiters are often paid a commission for every one of their successful hires and that commission is often split between an immediate payment and a payment (or payments) when the hire hits specific milestones (6mo, 1 yr, etc). Recruiters don't like trying to fit contractors into non-contract roles because they're worried about the contractor leaving before the recruiter's remaining commission is paid. If that happens, the recruiter puts in just as much work and gets paid less. They'd rather discard those resumes that they consider to be riskier and focus all their time on people with a history of staying at least 2 years in every one of their jobs.