I think we're already seeing what will happen to miners as all coins are mined.. It seems we're seeing fees go up some, as the number of coins being mined goes down.. Now, when every coin is mined, will the BTC network become something of a NOSTR network? I don't think I'm smart enough to know.. Of course, when's the last coin to be mined?  2140 ?  I don't think I'm gonna have to worry about this, unless I end up in the Guinness Book of World Records..