Can making an invention make you rich?

Sure, but it depends on the effect of your invention. If it's just a small invention, it must be a big invention. For example, Bill Gates invented the Microsoft operating system, and the computer changed from black and white to color, and from keyboard to mouse. This invention also made him the richest man in the world, and his invention changed the information age. For example, Yuan Rongping invented hybrid rice to solve the problem of feeding hundreds of millions of people, and the state rewarded him with 5 million yuan.