Costs are lower, but the rewards are also lower, at about 10% of Ethereum's mining rewards. Last I saw, ETH mining was about 33% profitable. With mining reward

Costs are lower, but the rewards are also lower, at about 10% of Ethereum's mining rewards. Last I saw, ETH mining was about 33% profitable. With mining rewards ten times higher than staking rewards, that means miners take home about three times more on their investment than stakers.