My first company out of uni was a company that sold a tv advertising application written in dos. It did all the reports, put together spot advert packages, measuring reach and frequency, cost per point, etc. Used Neilsen ratings for data. The company at the time paid commissions along with salary to programmers. The app still lives on in windows, but I've been out of that game for decades. Written in TP for dos, then Delphi for windows.
Honestly dude, this is clever. Good on you for finding an opportunity to make a useful tool and you made out like a bandit in the process. :)
That was the toolchain that my company used. Turbo vision was a Borland product, back when Philippe Khan was running the company. We were that ahead of the curve for "shrinkwrapped software development" at the time. That legacy, Delphi and FPC still maintain the standard for desktop, native dev, really for the last 30 years.