What are the likelihood that app-specific rollups take off in 2024?

Let justice be done though the heavens fall

If it does, which stack (OP/ARB/Custom) will be the most utilized?

62.5% by my reckoning. Are you recovered yet?

That’s very high, some folks are debating that the rollup world will eventually consolidate to a a few generalised super rollups. Almost haha, thanks for asking Will.