The phrase "ponzi scheme" has been thrown around liberally in regards to cryptocurrency, especially on this forum, but I've never heard a convincing argument that it actually fits the definition.
It's weird because it seems like you can point to various aspects of crypto and maybe identify them as being a pyramid scheme, but I don't feel like that definition holds up as it gets sufficiently large and self sustaining. Otherwise you could point to a number of other very large money machines like the stock market or even money itself and say it is also a pyramid scheme. Maybe it is though. Perhaps the entire economy is a pyramid scheme that is dependent on an infinitely growing population.
As soon as we hit a population limit on the planet there will be no bigger fool to sell to in the future and the economy becomes stagnant.
As for the literal definition of ponzi scheme I don't think it holds up because everyone is fully aware, or should be of what it is they are buying and where the money is coming from if they want to sell.
The same can be said of any startups. They are pyramid schemes until they finally offer utility to customers.
What is sometimes up for debate is whether something is serious utility, such as “owning” a picture anyone can look at, or a digital experience in the metaverse with artificial scarcity.
But then again, under the capitalist system, we need to introduce scarcity even where it’s not easy to do so, in order to recoup initial venture capital. So for example, I remember stories about SWAT teams raising grandmas for downloading movies illegally, or about manufacturing companies all forced to cripple their software with DRM, or the blowup at the W3C, or crackz of popular software that kiddies handed out until all these companies like Adobe went full SAAS. It’s an antipattern that is the direct result of any capitalist system.
By contrast, open source, creative commons etc. doesn’t have that issue.
"Bitcoin doesn’t really meet this broader definition of a Ponzi scheme any more than the gold market, the global fiat banking system, or less liquid markets like fine art, fine wine, collectable cars, or beachfront property. In other words, if your definition of something is so broad that it includes every non-cashflow store of value, you need a better definition."
You know they'd have a point if they were talking about Bitcoin and gold, but they're not - because if you don't get understand what underpins the value of fiat, or pretend it's the same - then you have an agenda to push.
Fiat has value because it's legally recognized by governments that issue it: it extinguishes tax and debt obligations in those jurisdictions. This makes it markedly different to any other of the commodity items listed: my government will only ever tax me fiat currency, which is sufficient to extinguish those taxes and fulfill debts. I can't be ordered to pay them in gold, or bitcoin.
Imagine if every merchant came up with their own currency and forced you to pay them in it only. Wouldn't a global currency be a lot more efficient & frictionless?