Earlier quoted context omitted.
I think of it like this. Various tokens give you certain types of exposures with different risk profiles. Yields are so high because of the risk. This really isn't so different from the centralized financial system where we have built complex structures (exotic derivatives, structured products, etc) to give you certain types of exposures. The difference is that DeFi is globally accessible and permissionless. Even if…
Except those "exotic derivatives, structured products, etc" do have real investments at the heart of them. What is at the heart of those "DeFi" investments? It seems to mostly be criminal and criminal-like behavior (this includes transferring money in ways the local government doesn't approve of which can admittedly be great if the local government is oppressive).
It is a matter of regulatory clarity, and processes and infrastructure (of which some of these projects fill) until we get hard non-crypto-related security tokens etc.
Things are starting to fall in place but things have to prove themselves in the current market before