Anyone can trade wether you're rich or poor. For me, there is no difference between them but their trading capital. Why? Because they can both become profitable or not profitable in trading. They both need to do backtest or do a demo account. Rich traders don't trade with the same margin as poor traders, they put margin based on what they can afford to lose. The only difference I see in them is their trading knowledge and mindset.
Trading is for everyone. It is a matter of the level of understanding we have in the market. This is why we don't have to be a weak trader or relax to the little things that we know about the market. It is good when we try as much as possible to improve our skills so that we can easily adapt to the change in market structure. Market structure is something we need to be prepared for which is going help us in a long run understanding more about the market and what coild possibly happens next..