Let's give an example of you bought 100 BTC at 9000$ Price and the price went 9010$ in seconds then you sold, so your profit will be 1000$, may 500$ fees, but the another 500$ you made it profit in seconds!
Let's discuss at the point!
Yes you are right Bitcoin can make people rich quickly and this happens in every market be it stock market or crypto market and I agree volatility is much high in Bitcoin market but every coin has two side if Bitcoin can make you rich quickly than it can make you poor easily and quickly.These markets are based on mixture of luck and knowledge,if both triggered at right time than you are rich and if luck factor is Missing than your poor.