This is true of every tech billionaire. They improved something that already existed.
Rarely if ever do they true novel inventors dominate the market because when the market doesn’t exist they have to create it, and also they’re inventors not necessarily business men.
Managers write novels because employees complain about lack of transparency and communication. I promise you no manager wants to write some novel about how layoffs are good for company, but they just or they get skewered for not communicating.
I just did this. I had 2 very important things that helped me succeed in starting.
1. A supportive wife
2. A wife that can pay the bills while I take 0 salary to build something.
Without those 2 things I wouldn’t have been able to start.
As I’m sure you realize now that you have a wife and a child your free time is limited and at bad times. So if you want to actually be able to accomplish something you have to pull real time away from something else.
Your choices are 1. Your family 2. Your job.
You could try going part time and asking if your wife is willing to do an outsized portion of the family work but that goes back to (1) being critical. First and foremost you need a wife that will support you.
I know this probably isn’t helpful but it adds a datapoint for you.
There’s this one called a binary search tree. I’ve only heard about it a handful of times- during engineering interviews, but is otherwise reserved for the most esoteric of problem/spaces.
Rarely if ever do they true novel inventors dominate the market because when the market doesn’t exist they have to create it, and also they’re inventors not necessarily business men.