POL liquid staking protocol opens up $620M in staked POL from Ethereum mainnet, channeling it directly into Polygon PoS. This move significantly boosts liquidity access while keeping capital productive across chains—holders get exposure to staking rewards without locking up assets. The shift highlights the growing importance of cross-chain liquidity solutions in DeFi, where protocols are increasingly finding ways to unlock trapped value and maximize yield opportunities. It's a practical answer to a real pain point: how do you stake while maintaining flexibility? Polygon PoS integration here changes the game for POL holders seeking better capital efficiency.