[htss2013]

The reason they push you up is pretty transparent and it's not to get a pay off on their investment.

It's because they have a really hard time externally hiring and retaining senior people in X job. They can recruit and churn through junior people all day. So they figure it'll be much cheaper to manufacture juniors into seniors internally.

If they lose a junior who fails to convert into senior, who cares? They're relatively easy to replace. It's worth the risk even if only a minority of them convert into senior people successfully, because they're so difficult to hire externally and keep.