This is a great idea for a potential startup or, even better, some free software. I started developing something like this but didn't go far.

Yeah, maybe. The issue I foresee is more that the moat is quite small if you can just build it, so the moat would need to exist in stuff that can't just be built and replicated within a few weeks or something. User base maybe, connections to real resources, some other form of deeper value you can't just copy. Not sure though; I'm not a business person