That sounds good as a sales pitch for your service but I don't think it's accurate.
While true that recruiters get paid by the employer to place the right candidate, reputable recruiters generally do not submit multiple candidates for the same position at the same time. In other words, the recruiter is working to place you if you look like the best candidate.
If a recruiter "spams" their customer (the employer) with unqualified candidates their customers will stop using them. Employers who use recruiters expect the recruiter to screen and qualify applicants, separate the wheat from the chaff, then put their best candidate forward. Good recruiters will bypass the application and HR steps and get their candidate in front of the hiring manager. That's why employers use recruiters -- they're outsourcing the resume scanning and initial screening process.
People who have had bad experiences with recruiters often blame the recruiter and that whole industry when they should reflect on their own shortcomings. If multiple recruiters aren't putting a candidate into interviews that may indicate the recruiters are incompetent or that whole industry is parasitical and useless, or it could indicate that the candidate is not attractive or competitive for the available positions. I think it's obvious that recruiters will focus their efforts on the best candidates they can find because those people will most likely result in a successful placement. That's the only way recruiters get paid. They don't make any money submitting applications for candidates who don't stand out or get through a phone screen, or who can't write a competent resume tailored to the job. We have job coaches and counselors for that.
