Remember Henry Ford? He was the business breakthrough of his day. His innovations we depend upon today. What would you life be like without the automobile?   Without the assembly line?
Here is Henry Ford on the topic of training, but a business owner’s perspective:
The only thing worse than training  employees and having them leave is not training them and having them stay.
Think about it.
BTW, when times are hard, small businesses usually cut training first and advertising second. No wonder the failure rate is high among small businesses. Small or large, do not let this be true about your work group.