Fair questions @junkui.eth, and they’re the same ones the alignment thread asks in fuller form, so I’ve answered them completely there.
The short version: private interop is being designed so protocol-level fees can exist at the network layer. Those network-level fees, distinct from Matter Labs’ services revenue, are what governance can route through the Fee Flow system already deployed onchain.
How they’re structured, allocated, and whether any mechanism is activated is governance’s decision. Activation makes sense when there are real, recurring fees to route, not symbolic activation when there are no fees.
Also, since you flagged the token page language earlier in another thread, it’s been updated so its architecture descriptions match the current state of the network.