I'm not sure that is true. I agree that talent is made (thanks, K. Anders Ericsson), but I think that anyone running a business has a finite amount of their own resources to spend. Devoting more of those resources to developing employees takes them away from developing the business.
To put it another way: the harder your job is, the less likely you are to succeed. Less skilled employees make your job harder.
To put it another way: the harder your job is, the less likely you are to succeed. Less skilled employees make your job harder.