composability doesn't mean we need everything to have a market cap

A market price isn’t what makes all things composable. 

Composability allows certain things to find a market price easier 

But people don’t need to explicitly know the fair value of everything on the internet

not sure, partially agree

it reminds me early day of defining price for wheat on free bazaar (market)

important question is what's a fair value for anything and how we can measure it?

Absolutely! Composability focuses on interoperability and functionality rather than just market cap. It's about creating value through integration and collaboration, not just financial metrics.