$100 won't make you a millionaire in Crypto today like what Bitcoin did to its early holders.

Bitcoin has established itself as a 'currency' and it's almost reaching the top 100 entities in terms of market cap, even though Apple is still 10x bigger than Bitcoin.

Some people say that Bitcoin is just a currency and has no practical value unlike Ethereum or other tokens that actually solves real-life problems.

Now if we don't compare Bitcoin to a company like Apple, but compare it to a currency like the USD, it's a different story. There's $1.4 trillion in circulation, and that's only the USD. Total of all fiat currencies in circulation in the world is at least $31 trillion. Now Bitcoin, unlike USD, is not nation-specific, which means the whole world can use it like a global currency. Let that sink in for a moment.

Of course, Bitcoin's value is worth as much as the collective us give to it, but is that value going to just disappear? It's almost as likely as USD disappearing. As more and more people and businesses accept and use Bitcoin, it can only grow bigger. One may argue that Ethereum is catching up but bear in mind that Ethereum is competing with industries (app development, bookkeeping, etc) but not currencies. Once Bitcoin's scaling issue's been resolved, it might be well on its way to be the one global currency, which no industry can match.

So it's safe to say that no token will be able to get a 50000x growth (and counting) like Bitcoin did because they are niche in nature and are competing with existing solutions offered by various brands and corporations. So even if you get $0.01/token in an ICO it is quite impossible for that token to reach $500.

We can only envy those who bought $100 worth of Bitcoins when it was just a few cents because no token is going to achieve such ROI anymore.

A generous estimation of a realistic ROI even for the best altcoins nowadays would be 100x its ICO worth. If you base that at $0.01/token you will still need to risk $10k as the initial investment to aim for a million dollars. But if you are fortunate enough to hit at least 4 different tokens that achieved at least 10x, albeit in a compounding order, then you get a shot to a million dollars.

In short, you can't be a millionaire in a few years with just $100 investment today even if you caught the best performing token possible. Not in any single token. Some history is just not meant to be repeated.