Yes you can if you invest wisely. Or maybe if you are just a lucky one. But anyway you have to do some work to get rich because there is nothing free in this world.
There is a concept called the marginal benefit and if we think critically about the cryptocurrency, the market for cryptocurrency is not yet fully saturated and we still have a lot of gap to fill which in other words mean that the market values of the potential coins will be very high in future and due to the tough competition, the coins with no good project on its back will be obsolete. Moreover, the more the technology expands, the more it shines.