Hello Greek John,
While Sharmila Das & Ashok Negidi clarified your primary query, I get a feeling that there's some confusion in your mind about the topic/issue of incentives for recruitment.
Pl note that while it's NOT mandatory for a company to GIVE INCENTIVES to recruiters, it is ALSO NOT mandatory that the driving factor for a recruiter HAS to be incentive. There would be multiple choices--and it all depends on the the Employer AND the individual.
From the Employer's perspective, salaries @ some companies would be quite high--to circumvent the need for any Incentives.
From the individual's perspective, he/she COULD have his/her own set of priorities for working--effectively & NOT with disinterest--in an environment which may not have incentives, but has other attributes/facilities that cater to his/her priorities.
In a Nutshell, it depends on multiple factors rather than a single one, as to 'HOW MUCH of a driving factor' are Incentives in recruiting.
Rgds,
TS