Don't you think when the last BTC is mined, the community of miners didn't increased the number of allowed/possible BTC? ie a change to the algorithm? When BTC stays a store of value, I suppose it can continue like that, but I would also not be surprised BTC will die at some point in time, even if it is the mother of all coins. BTC has no other value then to store, since the tx speed is way to slow for anything else.