EDIT: Also profitable, taxes should be less then 90%. Just out of curiosity, isn't DeFi motivating users to defraud the IRS by promising 10% without reporting it as income?
EDIT: Come to think of it, if they are offering 10% without reporting to the IRS, which is obviously less than after taxes, would it be reasonable to assume all revenue / profits have not yet been reported to IRS as revenue?