Good question. The bad ones don't go away immediately. They go away eventually, and are quickly replaced with another round of new hires. So you have maybe 10% of the industry that stays for the long haul, and 90% is a revolving door of college grads.
There are probably other industries that have similar models where most of the workforce is newbies at all times, but I don't have an example that won't be dissected.
There are probably other industries that have similar models where most of the workforce is newbies at all times, but I don't have an example that won't be dissected.