I went to a Elon Musk's talk. He said he wouldn't have started spacex and tesla if he hadn't had the initial capital he gained through paypal. I want to start

I went to a Elon Musk's talk. He said he wouldn't have started spacex and tesla if he hadn't had the initial capital he gained through paypal. I want to start a robotics company and I guess I would start by selling robotic toys and kits.