Total gas consumption on Lens Chain has been around $300 per week, 15k annualized. Gas is now sustainable on Lens Chain, the more ZKSync stack keeps improving the proofs, the lower the gas per transaction becomes and of course Avail makes it even more cheaper as a Data Availability Layer.

There will be a point in time where zk proofing systems are more competitive than optimistic networks by multipliers and at that point optimistic rollups need to migrate to a zk-based system.