To be fair to "management," having invaluable company contributions that could tank a company were that contributor to no longer be there is a huge risk to all

To be fair to "management," having invaluable company contributions that could tank a company were that contributor to no longer be there is a huge risk to all employed there that should be mitigated against. It would be irresponsible of leaders in that company to make the company overly reliant on any one contributor. I know I certainly wouldn't want to work somewhere that would implode if a single person left, and for any decent-sized company, I imagine many others would share that sentiment in terms of the risk involved. In fact, while I feel many of my personal contributions are valuable, I'm ALWAYS thinking about how I can automate/document/spread around my efforts so as to provide some resiliency should I get hit by a bus, etc.