Companies have very little interest in investing in their employees personal education, because once they have learned the new stuff, they might just leave to a

Companies have very little interest in investing in their employees personal education, because once they have learned the new stuff, they might just leave to another company and take their freshly acquired knowledge with them. It's the same reason why companies want to hire only experienced people even when the skills they require could be acquired by an otherwise competent person in a few months with proper training. In economic terms, it's a market failure; no-one wants to be the one paying (either in terms of money or employee working hours) for stuff that someone else can benefit from.