A finite number of people invest a finite total sum of money($$$$) in Bitcoin with the idea that they can all become millionaires. Does anyone see a problem, given that none of them had been a millionaire and their collective money are a finite total sum?
Where would the money come from?
Anyone say pyramid?
Why do people feel they have the right to call Bitcoin a scam just because many people believe in it? Now, do you understand that many people bought shares of google with the expectation of earning money? Is google a scam?