I don’t understand who is the one being “scammed” when a person runs a consensus and execution layer clients along with their 32 ETH? They attest and propose blocks so that users’ transactions get included in the blocks.

If you’re talking about the gas fees, that’s the pricing market at work, similar to toll fees for cars for highways. Layer 2s would be the train or megabuses on those highways - amortized gas costs by the number of people on them.

PoS ensures marginal rewards to everyone equally with the same percentage unlike Bitcoin. You either bought ETH at $8 a pop back in 2017, or you’re now buying it at $1850.