If everyone puts their money in the bank and gets 5% (say), then the proportion of wealth will remain unchanged. (FWIW, a similar argument against Proof of Stak

If everyone puts their money in the bank and gets 5% (say), then the proportion of wealth will remain unchanged. (FWIW, a similar argument against Proof of Stake (that it will inevitably lead to greater and greater inequality) is similarly flawed. (This doesn't mean that PoS is a good idea.))