I generally agree with your post but I think that we should avoid easy caricatures here. I doubt that one would describe the UK as a "former socialist State". Yet, nationalisations, or partial and temporary nationalisations, are part of the arsenal of measures which are also contemplated by the UK, and were in fact used in relation to the banking sector in the 2008 financial crisis or in relation to the railways in the current covid19 crisis with the cancellation of all rail franchises (incidentally, for anybody tempted to indulge in simplistic "state and nationalisations=bad; private sector and privatisations=good", just have a look at the disaster zone that UK railways are).

In situations of profound crisis like the current one, temporary nationalisations can be a sensible way forward. From a public acceptability perspective, asking shareholders to take a haircut in return for state aid, which partial or total nationalisations often entails, can also be a sensible move.