Predatory journals: A sign of an unhealthy publish or perish game?

In recent years, the number of journals that publish articles without considering their scientific merit, but simply because the author has paid a fee, has expanded dramatically. Because non-predatory journals are unable or unwilling to accept more than a small fraction of the vast numbers of research papers being written, the predatory journal industry has a guaranteed supply of willing authors. Reputable journals could, at least in principle, refuse to process articles that cite predatory journals. [Extracted from the article]