The primitives of web3 effectively enable the fine grained economic measurement and distribution of every element of value-exchange, and gives folks the ability to participate in these cashflows where they were previously not able to.
Now that there's standards for representations of value / governance / etc (ERC-20) now any protocol that supports ERC-20 tokens can be applied to any ERC-20 token. Ditto for NFTs.
As an example, if you want to split cashflows from any source based on some pro-rata ownership of tokens: there's a off-the-shelf battle tested contract for that. This composability and remixability of economic value flows has never existed before. Mix that with governance concepts in DAOs and you effectively have a parallel system of capital allocation and investment decision making.
p.s. Charles Stross was amazingly prophetic in Accelerando where the Superintelligent AIs create a system of economics called Economics 2.0, which is indecipherable to humans. Reminds me of smart contracts interacting :)