Long Run Fee Generation of Ethereum

Has anyone tried to estimate the annual fee generation ethereum might have in the long run? Fees per transaction will come down as ETH competes with other L1s but presumably number of transactions will go up.

Ultimately after the speculative phase, part of the fundamental valuation of Ethereum will be based on staking yield. If let's say in the long run Ethereum only generates $500 million of revenue per year (making up numbers), then perhaps you don't want to pay $500 billion for that for example.