Unconditional training key to employee retention?

Accenture released a statement which I read from Inquirer that unconditional training is a key to employee retention. In my opinion, it's just one of the many keys of employee retention. Some other keys are compensation and benefits, relationship with other employees in the workplace, environment and of course employee attitude. Key employees should be compensated well to address their financial needs. They should also feel that they "belong" in the organization. Also a lot of motivating.