A growing percentage of lost Bitcoin is not necessarily a problem. Even when 99.9% of Bitcoin is lost, there will be 21 Million milliBitcoin remaining. One issu

A growing percentage of lost Bitcoin is not necessarily a problem. Even when 99.9% of Bitcoin is lost, there will be 21 Million milliBitcoin remaining. One issue might be that a mBTC only divides into 10^5 satoshi, but changing the rules to further subdivide the smallest unit, e.g. into millisatoshi, should be straightforward, and restores the original model.