>I know people who were devoting their life to their job, were working in very profitable companies, were exceeding expectation for their level, were working on project that were sold to them as critical by management.... and they were fired overnight without notice (and some of them continue to lick ass on Linkedin on how great was their company).

Sounds like those people are suckers. So, maybe stop being a sucker? Or maybe we should write laws against being a sucker? Or taking advantage of suckers? I really don't know what's being proposed here. If you are a grown man you should know that your employer is not your friend. They are taking advantage of you and you should take advantage of them.