> this is talking about making free services non-free to support the creation and growth of the service

Naval (author of post) already did this with Angellist, in a way. They systematized the introduction of founders->angels. Which was happening freely over email beforehand. The service inbetween can add value over free methods.

Nothing wrong with that really as a starting point. Centralization is sometimes needed for trust. The angels may need to trust some escrow, dispute process, or software stability if they want to invest money this way.

But agreed it could technically be decentralized/free.