Successful, stable businesses with multiple diversified clients don’t come easy. It’s rare to have a single-person business with a product that scales to many customers. Once you scale it, you likely need to bring on employees, which means you now have significant financial obligations to make payroll every month. That’s hardly low-risk.
If you’re the type of person who can build a successful single-person business with multiple customers, it’s not exactly difficult to find a high paying job doing the same work for someone else.
You don’t start a business because it’s easier or less risky than a day job.