This is the Western countries' version of hikkikomori and there will only be more of it as education and good opportunities become out of reach for more people.
Men seem more likely to do this than women because of the societal pressures on them to get a job and run the rat race of dating and climbing a nonexistent corporate ladder.
For those people living in major job centers or major job creation industries it seems unfathomable, but there is an entire American generation out there experiencing this, being told that they're not shit if they don't go to college and work a 9 to 5 (which really is more of a 9 to 9). I don't blame them for opting out of such useless propaganda. Not everyone enjoys or is interested in computer programming, and starting your career in your 20s without an inherently marketable skill is terrifying for most people.