Considering that it costs 20% for a match by a recruitment company, there is enourmous ROI for a program like that. It would almost be as good as the ability to print money.

Not to mention the cost you could get for the unemployed to sign up ("It costs you on average 2k/month not to use our service").

Enormous ROI for the company, not so much the recruiter, who enjoys the moral hazard of getting paid either way, whether their filtering sucks or not.

Sure, if the company hires the applicant.

Which leaves the question of why no work appears to be done in this direction.