I've read that that's how it pretty much works in a lot of Japanese companies (i.e. even when you're pretty much of no use because of bad luck (illness, accident), they give you for example a janitorial job where it's understood that little is expected of you).

That's completely at odds with Western individualistic culture though hence it's rare here. Netflix is not really an exception - if you are the "weakest link", they will just fire you after your yearly review instead of waiting for a panic fire of bottom 10-20% of staff when stock price plummets (like most other corps do).