People who thought they could "have their cake and eat it" are now mystified that having eaten the cake, the plate appears to be empty. I wonder what people are

People who thought they could "have their cake and eat it" are now mystified that having eaten the cake, the plate appears to be empty. I wonder what people are going to think if there ends up being a hard border between England and Scotland, which seems like a risk if /when an independent Scotland rejoins the EU. I suppose the English will blame the EU, the Scots, anyone but ourselves....