You are not going to become rich by investing in Bitcoin now, the chances of the price doubling are much smaller than the chances of it halving. Many other Cryptos are not mainstream yet and do have a great potential, but not Bitcoin.
The fact of the matter is Bitcoin is probably in a bubble. This does not mean all cryptos are in a bubble but Bitcoin definitely is.
Bitcoin is slow, expensive and, realistically, has no chance of beating FIAT as global currency. However, many other cryptos propose a better idea and have a much brighter future than Bitcoin.
The Crypto madness has just started, but the Bitcoin era is about to end.