Been thinking about volatility.
Firstm it is certainly possible to make money just with volatility. Suppose I have a Token, and it starts at $1, rises to $2, falls back to $1, then falls to 0.50 and back up to$1. Every period, I rebalance so half my money is in dollars and have it this token. I start with $200, and put $100 in each. The Token rises and now I have $100 in USD and $200 in the Token. So I sell $50 in Tokens, and not have $150 in each. The Tokem falls to $1, and now I have $150 and $75; rebalance and I have $112.50 in each. The Token falls further; I have $84.38 in each after rebalancing, and after the Token rises again, I sell it and have $253.13. In short, I've made 26% on my money, just through volatility. I spell it out in such painful detail so everyone can see it's not a trick.
Same thing happens if it goes down and then up. If there is an upward or downward overall trend, this works on top of that trend.
So I can make money by betting on volatility. If one treats this as a single transaction, who exactly is my counterparty? Well, if I am betting on volatility, it's people betting on stabiliy.
This means there are people who have a financial incentive to present cryptocurrencies as more stable than they are. Calling them "currencies", for example, promotes this.