The question at hand is whether there are opportunities for people to make a living and support a family, not whether everyone can have a dream job. For the majority of humans throughout time, work has never been something that people do because they couldn't think of anything they'd rather be doing. It's always been a means to an end.

Your comment suggests that it's not opportunities that have been lost in recent decades, it's that the younger generations' expectations for what life owes them have changed.

That's not necessarily a bad thing, to a point. But it's not accurate to claim that the lack of dream jobs out there means that there are fewer opportunities for gainful employment than in generations prior.