What staking reward does EF need to win the race to Web 3.0

u/vbuterin asked us in a recent AMA what staking reward we think we would need to be sufficiently incentivized to stake. I'd like to turn the question around a bit and ask what reward the EF would need to indefinitely finance the build out of web3.0 without depleting ETH reserves and without losing the race to some better financed competitors.