I heard a rumor that Devs believe 80% of the ETH supply will eventually be staked. Does anyone know where this rumor came from?
I am not sure where you heard that but Ethereum Shanghai will "enable" Staked ETH withdrawal of all validator, stakes will be liquid. Once Shanghai update is complete, validator can move their fund anytime they want which can lead to more investor.
Those stakers have been staking lots of money. The new update will be executed through shanghai upgrade to make public less worried about their money if they wanna try to be validator. I meant they can unstake it anytime. This is the main point.
There are some EIPs being included in this update and it may be executed later like EIP3651 which is related to the gas fees, EIP3855 lowering gas to the developers, EIP3860 gives caps to the developers gas price cost.
I think that such rumour happened once shangai will be implemented caused by people shall not feel worry to stake their ethereum