A point to keep in mind is that percentage returns may be misleading if the initial market value is very low. Bitcoin's early expansion took place at a time when it was still not well known and embraced. It would take a lot more new capital to get the same multiple today. The issue is how much more demand is there going to be to sustain such scale. But it's not just the supply that matters. There's demand and investor confidence as well.

This is exactly a clear evidence to show that Bitcoin has more millionaire making potential than investing in Gold, and S&P 500. Before now there has been debate why it is more profitable to invest in Bitcoin than any other digital investment, and I believe everyone is well convinced with this comparison. The only thing is that diversification in any investment cannot be ruled out otherwise one can only choose investing in Bitcoin alone because of the long term track record of making huge profits. Stock has existed even for more than than a century, and Gold investment has also been their for some decades but Bitcoin is still less than two decades in the digital market, but has produced outstanding profit in the digital market. Bitcoin is unarguably the best digital asset to invest in , and this is the more reason why it is attracting so much attention, and investors round the world.
Many people are still afraid of Bitcoin investing today, but I think such people have not fully researched, and understand how Bitcoin investing work. They say Bitcoin is too volatile, and Bitcoin have no governmental backing. However Bitcoin is still existing, and even doing better than the government backed asset. However, we can see the increasing interest from both individuals, and government showing that government is gradually embracing Bitcoin , and also investing in Bitcoin as an asset against inflation.

It explains why Bitcoin succeeds while most altcoins failed even they tried to shill their projects as game changers, Bitcoin killers. Bitcoin has a good deflationary supply but it has many other things which make its very high value and its value has increased very well with time too.

Only a cap for total supply and deflation with time and market cycles won't be enough to create value of a cryptocurrency. How many cryptocurrency projects are decentralized in developments. How many blockchains are decentralized in hashrates if they are PoW?

Among many blockchains, Bitcoin is the most decentralized, strongest and most secure while in developments, it has best developers in blockchain industry too.