Coinbase and Optimism in the L2 Race?

Arvidron and optimism have almost all the market share right now in the L2 race. And so they both use optimistic roll-up technology. That's one way to scale Ethereum. The other is with, as you mentioned, zero knowledge technology. I don't know how feasible it will be for this optimism based projects to just like plug in a CK roll-up. So we'll see.