Again as I and the other poster have pointed out, you are treating the employees as actors with no agency being acquired by competing firms. If employers are go

Again as I and the other poster have pointed out, you are treating the employees as actors with no agency being acquired by competing firms. If employers are good and also increase pay to employees the employees will on average not be looking to jump ship. The mental cost to switch jobs is not zero and people prefer to stay where they are comfortable. The majority of people look to move when their employer is not providing them a benefit. Undergoing any sort of training imposes a mental and time cost on the employee and if their current employer does not increase their compensation at all, then they are shouldering a cost for no benefit. The employer offering the training doesn't need to match what other companies could offer if they don't pay for training, they just need to offer enough that the newly trained employee doesn't care to switch.