It requires programming in a language specific to one little known db product, in an extremely brittle and spaghettified code base . There's exactly one person in the company who kinda knows how to do it, and they're unavailable for the foreseeable future on higher priorities. We don't have the money to throw at new hires or huge porting projects.

Imagine software that has been in production since the 80's, was written by a very inexperienced dev and has since been continually "organically" upgraded to handle any new promise that a nontechnical product manager feels is necessary to solve the immediate problem of an angry customer. It's a Jenga tower with a reset button.