Yes it does sound like marketing speak, my bad.
So deFi can help users and communities because decentralized financial systems, allow users to lend, borrow, and trade without intermediaries, enhancing financial inclusivity and reducing costs.
Web3 technologies can facilitate community-driven initiatives, e.g. regenerative finance (ReFi), which supports climate action and equitable resource allocation. Also some interesting things happening around DAOs (decentralized autonomous organizations) e.g. Venture DAOs supporting new business creation.
In general the principles behind having reduced intermediaries, and having user control and ownership of user data, together with enlightened uses of smart contract and other Web3 technologies is empowering, especially if it's put to use to solve real world problems.
I do think that it's difficult to see past the sometimes murky shenanigans and greed often on display in Web3. But I think decentralization is a paradigm shift, it's going to take some visionary entrepreneurs and technologists to continue to build out the promise but I believe that it will happen.