I am one of those people who wrote a production system controlling a million-dollar business fifteen years ago that is now controlling almost a billion-dollar p

I am one of those people who wrote a production system controlling a million-dollar business fifteen years ago that is now controlling almost a billion-dollar production system today. The auditors are the main reason it is being changed, "single man risk" and "Obsolete software" (Delphi/MySQL) being the two highlights from the Deloits IT team. The code is not brilliant, it is full of technical debt (as thats what happens when companies grow and change) but is still perfectly maintainable. I have been watching the herculean effort of three different teams to replace this system, carving off the low hanging fruit to NetSuite and React/Java applications while repeatedly delaying the core system while they agree on standards to use. I stick around as I am quite close to retirement now and the employees and the company are good to work with and don't deserve me to abandon them. At this point I genuinely want the projects to succeed so I can move on as there are many small companies still out there that I can make a difference in even with my age, single man risk and obsolete software.