Rollups are exciting as it allows companies to offer their services and earn a fee while not being liable to protect billions of dollars — because it is the tech stack and not the operator who keeps the funds safe. Where does the “billions of dollars” come from? The world’s soon to be greatest liquidity layer: - Ethereum This is why scaling Ethereum is crucial. The greater its liquidity & usage, the better it is for rollups to tap in too. Bullish Ethereum & L2s.