what if each of those BTC trasactions will be $1M ? btc is not going to be used to buy groceries obviously, and its slow tech will not become an issue for inter

what if each of those BTC trasactions will be $1M ? btc is not going to be used to buy groceries obviously, and its slow tech will not become an issue for international trasactions. Banks still take days to clear their own international transactions and it hasnt stopped their adoption