That's the spring which compels them to invest: hatred towards the Fed policy of 2%, the public would really love a -2%.
The sentiment is so strong that they accept the consequences of the vastly inferior settlment mechanism which is BTC as well as all the headaches.
People don't have the same hatred and concern for companies which Eth aims to disrupt. People by and large love their user experience on Amazon, Google, Youtube, Robinhood etc. whereas Eth and DeFi is overtly complicated with 0 liquidity
The only bull case I can see for DeFi is that nerds with money and cryptopunk attitude would think that regular people would want to exchange JPMorgan and RobinHood for DeFi...in that case of course price will pump because a whole lot of people anticipate something, but it won't happen for real, just as an appreciation due to people betting and projecting that everybody is wired as them.