With Crypto, I'm not sure if I do. To my understanding, you deposit money into a cryptocurrency, like ETH for example, in an exchange. The exchange then uses it as liquidity to allow other people to convert one cryptocurrency to another. Am I understanding this right? If so, it was my assumption that they were making 10% on transaction fees & rewarding you with 8% or something lower than 10%.
In that case, my risk/reward assumption was that many of them would raise/lower their rates based on the amount of transactions being done & how valuable the liquidity was to them. I saw that some exchanges did this in terms of months & others were constantly changing their rates.
Am I wrong in thinking that this is something that should be feasible to do without be a ponzi scheme? Of course there is extra risk based on how long the interest rate is fixed for if the market were to go down fast. I would assume banks are similar in the sense that you might buy a Certificate of Deposit (CD) or type of a bond and you get a fixed rate for a period of time. Your country's currency could drastically change or inflation could change. For most countries this isn't near as volatile though.