For that to work, we would first need to make those blue collar jobs into ones that actually pay well enough for people to thrive instead of merely survive
Both the economy and culture play a role in the types of jobs people aim for. Tech used to be for "nerds" now it is "cool" because they watched The Social Network and Bill Gates told them they are smart enough to be part of the club.
Japan doesn't do that. Those part time jobs don't pay very well. There's just much lower overhead to having them, you don't have to own a car or a giant house to be in commute range etc.