It's not exactly rich, but it's quite possible to make money. For example, I started using the demo account of the Amarkets broker for work, and as a result, I was able to achieve quite good results.
Trading in real account and demo account will have different result , maybe in demo account we have no pressure in every transaction and mentalilty will kept well. but when using real account , the first thing in our mind was how if we suffered loss did we accept this. due this feeling our analisys full of doubt and finally not precision again.