Maybe a silly question, but if the concept of a stable coin is to maintain market cap (i.e. coin price) by dynamically altering the supply and/or demand. (e.g. Tether, Ampleforth) then what is the potential for a return on investment? For example, if USDT is always about $1 what's the upside of investing in it if the price never goes up?
Stable coins still pump and dump a little, so you ROI will depend on the market situation and will always depend on your target. If a stable coin doesnt move that much, then expect a little ROI since its a low risk of holding. If its never goes up, then no profit at all simple as that.