The issue is there's a kind of prisoner's dilemma going on - probably some people can see that there's a serious risk of still needing software engineers in 10 years' time and there not being enough because nobody is training juniors in 2025.
However, noticing this doesn't help because if you invest in training juniors in 2025 but nobody else does, someone else can just recruit them in 2030 and benefit from your investment
Yes exactly if workers can just up and leave and treat the job transactionally, that creates a race to the bottom. Workers have to train themselves then.
However, noticing this doesn't help because if you invest in training juniors in 2025 but nobody else does, someone else can just recruit them in 2030 and benefit from your investment