Keep squeezing your employees and you don't just end up with "not the best", you end up with "only people who literally can't get another job." And by the time

Keep squeezing your employees and you don't just end up with "not the best", you end up with "only people who literally can't get another job." And by the time even a quarter of your workforce fits into this category, you've made it a miserable place to work for everybody. The bunglers are miserably bungling for bare minimum salary, the remaining competent staff are miserably trying to compensate for the bunglers, and the oxygen thieves in charge are miserably trying to get useful work make out of a staff of bunglers and burnouts.