I run arb and loan liquidation bots, and have for over a year now. These are atomic transactions almost always using flash swaps/loans that exist only exist for the life of the transaction. I am only exposed to potential losses on transaction fees, but have never had a losing day while running production code. My yield on my investment (mostly infrastructure costs) is closer to 5,000%...per month. I will not lose my funds, whether the market is good or bad.
There are funds out there that conduct these activities, I know because I recently consulted for one. They are promising risk free returns and getting them.
There are things that exist in DeFi (such as flash loans) that have no real world equivalent, which is why blanket statements made about traditional markets don't necessarily apply. If used properly, these things do in fact offer "too good to be true" types of returns.
There are funds out there that conduct these activities, I know because I recently consulted for one. They are promising risk free returns and getting them.
There are things that exist in DeFi (such as flash loans) that have no real world equivalent, which is why blanket statements made about traditional markets don't necessarily apply. If used properly, these things do in fact offer "too good to be true" types of returns.