Why is this such a hard problem to solve? When I was a founder it was incredibly hard to find people who are "available" and skilled because they feared listin

Why is this such a hard problem to solve? When I was a founder it was incredibly hard to find people who are "available" and skilled because they feared listing themselves as available on LinkedIn. When I'm not a founder and skilled it's incredibly hard to get to hiring managers. Usually I get warm intros from people within companies I'm interested in, it works way better, and usually often results in jumping straight to the on-site interview step. Why isn't there a central website where you can just post your name-redacted-resume, accomplishments, and (optionally) target location and salary range anonymously, and if someone wants to reach out, then you can reveal your real name and e-mail? Or better yet a Tinder-like interface where companies swipe candidates and candidates swipe companies, albeit with no photos, just a name-redacted resume?