Theres plenty of things that are worth investing in, and can easily sustain jobs for people...
You really don't think we can just fund people to go into healthcare or teaching? You understand that there is no real reason for those professions have to be chronically underpaid and overworked, right?
I would also suspect that more than 50% of the people working this kind of unskilled labour do have aspirations to do more, it's just that it's hard to switch because they cannot afford to, they're working towards it or they're kind of stuck.
> nurses
nursing is a highly skilled job which the vast majority of people are _not_ cut out for; it's also highly competitive. Your average Amazon warehouse worker or truck driver is _not_ becoming a nurse
> elderly care
this would be something like a CNA; doesn't require the skills of a nurse ,but most people do not want this job (and also wouldn't be very good at it); there's a reason why a lot of undocumented people do elderly care in America
> environmental remediation
sure, this would be a good one. but who is paying for that? it's not a money maker, so unless it's government funded like the CCC, it's not going to happen. and given that work programs like that are "socialism", it's not going to happen in the US any time soon
> teachers
teaching, like nursing, is a job that most people are _not_ well suited for. more importantly, like the last one, who is paying for this? our government is trying to gut public education, not spend more money on it.
So, again, unless there is a _new_ industry that can provide a _large_ number of jobs, which is driven by _profit-seeking companies_ (because otherwise, who is paying?), it is _not_ happening. And so far, there is no indication that such jobs or companies exist.
So my point stands. This is _not_ like the Industrial Revolution or any other "revolution" (computerization, internet, etc.), all of which spawned entire new industries.