Then the company should better advertise more exactly in its job ads what they expect from their candidates so that less unqualified applicants submit their applications (while - of course - not preventing suitable candidates to submit their applications). Is this nontrivial? Surely it is; but that's why HR is a distinctive position in most companies.

If you want to learn more about this topic, begin reading about statistics - especially type I errors and type II errors, since this is the mathematical formulation of the topic I was talking about in the previous paragraph.