Although it's grown we are still in the beginning stage of btc adoption. Yes, a lot of people think they will get rich but I still think btc is like any other new technology and will have many morphs along the way
In fact still there are such places where people still do not have any idea about bitcoin. I think in such i do not think that they will believe to invest their fiat for making money and they will even not believe on bitcoin as currency, but later on when they will comes to know about bitcoin and they they will see or come to know about in vesting their money there will start believing of online purposes.