The social contract in Japan was that you’d give your life to your employer in exchange for a fair wage and stable employment until you retired. Neither of those things are true now. Wages are low and companies either ignore their legal obligations or hire people as contractors, who have less rights than full time “employees”. Now, many people, especially women* and young people are finding that it’s possible to run…
I think it says a lot about Japanese workplace pay if a small business at 3-4 days per week can outperform it. Not that I doubt it in any way: I've just started my own sideline and I'm already at 25% of my job income yet only putting in 5 hours of effort to do so.
Many of these Japanese firms are many hundreds of years old, and will probably stick around for some hundred more years.
Being able to run a small business for 5-10 years is very possible, but there's no guarantee you'll be able to do that for 20-30-40 years.
We often hear about the success stories, when it comes to small businesses and startups, but there are unfortunately those that will fail after N years, even if they had some pretty good years.