There are two separate things being discussed here:
1. A bail-out or state capital injection into LM.
2. Support for vital lifeline routes.
In my view, there is little justification for the first, although the Scottish "Government" may think otherwise. I would argue that LM should be offered the same benefits that other companies have received, such as 80% of staff costs for furloughing, but no more and no less. I suspect HMG will think the same.
The second is a much more compelling argument for the reasons advanced in recent posts. Likely to take the form of a PSO, and offered on a route-by-route basis.