> As an analogy, consider the lone sysadmin maintaining the lone linux server hosting a multi-billion dollar companies ERP, Billing Software, and website. The c

> As an analogy, consider the lone sysadmin maintaining the lone linux server hosting a multi-billion dollar companies ERP, Billing Software, and website. The company probably cares enough to ensure this person has a backup, and is paid well enough not to leave. If the everything works the company probably doesn't care enough to do a migration to a SaaS provider, replacing this admin is likely very expensive. Eh, I've seen people like this and maybe they get paid well, but the company also can't afford to promote them or move them around. One person I know was an expert in Fortran and worked at a large Wall Street bank doing processing of very large transactions (systems that process trillions of dollars yearly). Technically, there were "backups" who could do parts of his role, but realistically he was the only person who really understood the whole system. He would threaten to leave every so often and they'd bump his pay to an absurd level that made it hard to leave. But there was also no path the promotion for him and he got bored. At a certain point, he ended up leaving anyway.