there will always be great ideas that generate profit; way beyond bitcoin. bitcoin is by far one of the most accessible and prolific ways to generate wealth, but this was gold, this was tulips, this was high grade pot in the 90, and the dotcom bubble. essentially, a growth industry. there will be things after bitcoin that reward early adoption; and to be honest, these are things ( if you have an appetite for risk - hilariously, most crypto investors dont understand how much risk they take on a daily basis) that have the same returns of crypto, in the "real world".