That raises a moral hazard issue since systemically important banks will then indulge in excessive risk in the full knowledge that all the gains will be theirs; and should the risks blow up, the government or the central bank will bail them out and thereby the losses can be socialized.
And the new administration in the United States is going so far as to make protectionist noises. Elsewhere in the world, too, many people are mainly seeing the disadvantages which globalisation, and also technological progress, unquestionably entail for some.