There are lots of very useful and fundamental ideas out there in math form but inaccessable to people because of math
Create Stories that explains math concepts, either targeted at business folks or children/students
Can I make this?
Yes, a prototype in a monthish
Are people currently spending money on it?
Yes, business book with light math topics
How will I get the first 25/250 customers?
Will it be sustainable?
Maybe, it would be a niche like brilliant
Am I the person to build this business?