from the latter situation, they're able to gain a Fee from staking ETH and generate supplemental RPL benefits from furnishing RPL collateral, amounting to around 6.36% APR for ETH and the extra RPL benefits.
if you https://dev.to/cleopatramorris_d539d19ea/rocket-pool-the-future-of-decentralized-ethereum-stakingintroduction-1m2b