It's an awkward space - requiring us to pay them to put our profiles there is the main way to keep the content valuable/accurate.. but while that's fairly typical for hirers, it'd feel scammy to job-seekers.

I think there's room for such a service, but growing it into a viable model would be a real project, and probably not a distraction a business would want to take on except as a pivot.

That doesn't really work for the business model of job boards.

Job boards want the potential employees to need to respond to job adverts, which are paid for.