Because they don't want to waste their time on someone their client won't agree to hire. It's a numbers game, and from a time perspective, meeting you for coffe

Because they don't want to waste their time on someone their client won't agree to hire. It's a numbers game, and from a time perspective, meeting you for coffee and shopping your resume around isn't completely free. Years of experience in the client's stack are a pretty good proxy for whether the employer will want to talk to you.