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!
Getting rich in bitcoin is just a matter of luck. Maybe if you buy bitcoin from the beginning when it was created or from 2009 then sold during the all time high at the end of 2018 then maybe you already riched man now. But if you say getting rich in just a seconds ,it's very impossible specially now.