Wharton legal studies and business ethics professor Kevin Werbach and David Gogel in this K@W article (and podcast):
DeFi is a developing area at the intersection of blockchain, digital assets, and financial services. DeFi protocols seek to disintermediate finance through both familiar and new service arrangements. They use stable-value cryptocurrencies known as stablecoins as assets, blockchain ledgers for settlement, and software-based smart contracts to execute transactions automatically.
The market experienced explosive growth beginning in 2020. According to tracking service DeFi Pulse, the value of digital assets locked into DeFi services grew from less than $1 billion in 2019 to over $15 billion at the end of 2020, and over $80 billion in May 2021. Novel business models such as yield farming — in which holders of cryptocurrencies earn rewards for providing capital to various services — and aggregation to optimize trading across exchanges in real-time are springing up rapidly. Innovations such as flash loans, which are either repaid or automatically unwound during the course of a transaction, open up both new forms of liquidity and unfamiliar risks.
Despite its scale and potential significance, DeFi is still early in its maturation. Now is the time to evaluate its benefits and dangers. As with everything in the cryptocurrency world, hype around DeFi is sometimes out of control. Extraordinary — and unsustainable — short-term returns warped investor expectations and attracted bad actors as well as innovative builders. Most DeFi activity is still speculative and conducted by relatively sophisticated cryptocurrency holders. As mainstream usage grows, risks and regulatory considerations will loom increasingly large.






