I disagree with you on some points. From my experience trading in a couple of years, having the right knowledge is important for trading. Many people think the risk is about losing money, but it's not just that. With the right knowledge, you can reduce some risks and improve quickly. The real risk is not taking the chance to learn from an experienced trader. Some people are hesitant to invest in learning because they're afraid of being scammed.
People who have good understanding about trading and they want to keep learning from experiences, they won't easily give up. There are people who assume the problems in trading are the challenges for them. However, for those people who have weak mentality, it is not impossible that they will give up very soon. People with weak mentality will view the problems as a big wall, they assume it will be so difficult to face. Also, people who don't really understand trading, they are possible to assume trading as a scam. Whenever they got losses, they will say it is scam. They actually don't really know about the definition of scam. 