Basically the vibe I get after a few years on HN

Small company : fired. Assume someone out there is better than you. Unethical due to desperation. Probably why company remains small unsuccessful.

Medium: Put in blacklist and harassed with reviews until you repair your credibility or leave voluntarily.

Large company: Can’t fire you as that would affect their reputation. Alienation within company until you repair credibility or leave.

The large company description is speculation on my part and could be wrong.