If Bitcoin is a peer-to-peer electronic money system, then DeFi is a peer-to-peer electronic financial instrument system.
you just replace the word money as financial but both have simillar definition and even without this comparison i was already thinking before that btc can do what defi can do . thats why i d say that theres no need for defi or further systems , i hard to say this but they are like adding a stress , adds a confusion , adds an expense and so many add ons to the people . why not improve the previous systems that we have now . when they are improve they will become better and people will be satisfied of using them .