Friend, while I was driving a taxi in 2001, I conceived of a system that would let anyone directly order a taxi driver from a pool of drivers who signed up through a central SMS messaging system and updated their zip code when they were waiting for a fare. The main problem with that idea was that it was completely illegal because it was outside the licensed taxi system.
When Bitcoin emerged, I wrote a gambling site. That also was illegal in America, so I kept it closed to the US but tried to get my original games licensed in Nevada, which was a fool's errand since it takes $500k just to get them to look at a game and there's a 3 year waiting list, mostly Bally. And look where we are now with online gambling.
The lesson of my life isn't that I need ideas with a bigger moat. It's that being able to code my ideas well is meaningless compared to having half a billion dollars to buy off a legislature. I'm a coward, I guess, because I never wanted to break the law. Now I live in a timeline where every major company in those two sectors achieved market dominance and legality because the people who started them were willing to flout the law, raised enough capital and fought off lawsuits long enough to bribe their way into legitimacy.
I have a fantastic idea for an AI service, too, and it wouldn't be hard to implement... but it will almost certainly raise dozens of legal issues until someone with more balls than me comes along and just does it. Money is nice but I don't need that kind of trouble. That's why those ideas stay on the wall.