They can definitely find replacements, but they're still hurt by the knowledge that walks out the door with their former employees. My previous employer had a l

They can definitely find replacements, but they're still hurt by the knowledge that walks out the door with their former employees. My previous employer had a large decade-old (at the time) codebase that was only well understood by people who had been there since the beginning. Losing all those SMEs was a painful blow, which was why they finally changed their policies.