The fact that capacity for effective action has become such a key issue for monetary policy in the first place actually has nothing to do with digitalisation. It has more to do with the low inflation and the low interest rates of recent years, both of which are, first and foremost, after-effects of the financial and economic crisis.
Nevertheless, some observers already think that this could be the new normal. They are concerned that central banks are coming up against the lower bound with their policy rates more and more frequently and are having to turn to non-standard instruments.