Obviously you can make money in the stock market, but it's the biggest Ponzi scheme going...
If Bitcoin is a Ponzi scheme then what is FIAT currency?
A Ponzi scheme is where money from newer investors is needed to pay older investors, and as it continues, more and more money is required from newer investors to keep the whole thing propped up. This scales exponentially, so at some point, it will fail. Think of Bernie Madoff, he ran the largest Ponzi scheme of all time and made billions.
Bitcoin on the other hand is a fixed asset that won't ever inflate. It is as much a Ponzi as buying gold is a Ponzi, in other words, it's not, as thinking this way makes no sense. It could be considered a bubble, however.
Michael Saylor, the CEO of Microstrategy - which is a NASDAQ listed company that you can buy shares in - put $425m of their cash into Bitcoin, and they have set the company up to become a full node on the network. Before this could happen, he had to put it to vote amongst their shareholders. He also put $235m of his personal wealth into it.
Jack Dorsey, the CEO of Square, also put $50m into Bitcoin. This is becoming a more frequent occurrence as companies with large cash holdings look for a safe haven. As Michael Saylor pointed out, the company's cash pile was analogous to a pile of melting ice cubes in the current financial market.
Bitcoin is nothing more than a store of value, and if enough people believe in the concept, then it will succeed in the same way that FIAT currencies have. There is no intrinsic value to either. Your paper dollars are worth the amount that is printed on the front because you
believe they are. It's actually just a piece of worthless paper or data on a screen. Governments can print more money whenever they want and this leads to inflation. The downside of doing too much quantitative easing is that it devalues everyone's money, and this is why gold, historically speaking, becomes more valuable during hard times. Bitcoin is essentially digital gold.
Whether it can retain this status is another story, but if you look at what's currently happening, you'll see lots of money flowing into it, and this includes big institutions and hedge fund managers. To begin with it was ridiculed, even by Michael Saylor who I mentioned above, but now you have big financial institutions trading it. Even PayPal can no longer ignore it as it will soon be accepted on their platform as well.
I can spend Bitcoin in any place that accepts Visa via the card I have, which means the value is as real as my English pounds or any other international currency.