My parents started a software company out of their apartment in the early 80s that lasted about twenty years with a sole product, which was based entirely aroun

My parents started a software company out of their apartment in the early 80s that lasted about twenty years with a sole product, which was based entirely around a PC database / development environment. When I was cleaning out their office before they sold the apartment a couple years ago, I found a little cubbyhole next to my Mom's old desk. It contained a stack of shrinkwrapped end-user software licenses for the long-dead database environment their product was based on, one for each of their 60-70 customers over the life of the company. Cost at least a half-million dollars total, and went right into the dumpster.