You must now have RSI from tapping this out so many times.
The research does not agree with you. There is not going to be a shift from road to rail, not even a tiny bit. People who used rail to commute pre Covid were more than twice as likely to work from home than car commuters, and were already (on average) doing much longer journeys than car commuters. Looking forward, people who use rail are much more likely to work from home more in future than car commuters.
Rail has a long and difficult time ahead, some traffic has gone forever.
March timetables and plans are, sadly, not any use now for most TOCs. They will be in the wrong ‘data’ (December 2019 timetable, not December 2020), and none of them had any measures in them to protect staff - extra time for cleaning, that sort of thing.
Rail has a difficult time ahead, and whilst commuting will be hit hard it's likely that rail will see growth going forwards.
Whilst people switching to rail from road for commuting is very unlikely (although not impossible and there may be some who do, although chances are that's going to be something which is a longer term thing, especially given that it's much easier to get home deliveries than it was a year ago) that wasn't the main point of what I was saying there.
What I was saying was if you only need one car for commuting but for a few trips a year a second car would be "needed" then it's unlikely that a second car would be purchased as it would likely cost over £1,000 (with the average annual car cost being over £3,000) and probably not be used all that much.
Whilst many such trips could well be done with hire cars, there's likely to be a fair few which are done by rail.
Let's take as an example a couple where one of them is visiting friends and the other family, it may well be that the one visiting family drivers there whilst the other goes by train.
Whilst such trips may be infrequent it may well be that over the year they total 300 miles of travel (maybe a bit less maybe more, in that some could do that on a single trip) Whilst that's tiny compared to a commuter doing 13,000 miles a year, it's got the potential to allow growth to happen going forwards.