@kevinrns for this very reason there must be no critical infrastructure (like locks to one's house, flat or even a car; also other services used by communities - as simple as a gate) dependant on both centralized and always online services, having access to wireless connectivity or, in case of cars, phones and the like, even onboard electric energy as it might fail.
Too many things which can and eventually will break between the ends.
How many such deadlocks did we put into everything?