With a constant supply of new low-level drug sellers entering the market and ready to be exploited, drug lords can become increasingly rich without needing to distribute their wealth towards the bottom. You have an expanding mass of rank-and-file “outsiders” ready to forego income for future wealth, and a small core of “insiders” securing incomes largely at the expense of the mass. We can call it a winner-take-all market.
The academic job market is structured in many respects like a drug gang, with an expanding mass of outsiders and a shrinking core of insiders. Even if the probability that you might get shot in academia is relatively small (unless you mark student papers very harshly), one can observe similar dynamics.