owning things on the internet is (still) an unbelievably huge idea/opportunity. 

things public blockchains make it possible to own: 

identity, money, data, infrastructure, products, art/media, experiences, attention.

why is owning these things better/interesting?

- identity/data: conveniently bring it with you to any app to enabler richer/personalized experiences
- money: faster, cheaper, more control than traditional financial rails
- infrastructure/products: minimize platform risk/misalignment, participate in the economic upside of things you contribute to
- art/media: better incentives for creators/collectors; timestamped provenance onchain is a growing social signal, and theirs potential for collectors to profit from their patronage.
- experience/attention: typically monetized indirectlyvia ads/media, can now be monetized directly (e.g. prediction markets/memecoins)

Not missing, but deeper within data, is data type (which data?) and data structure (important for interop). 

My thesis is private data is valuable and tough to bring through onchain experiences. Examples include health, personal finance, (some)credentials, contacts. But bringing these across applications and personal agents would change personalised experiences deeply.