Even if hybrid working is the future, this won't stop rail demand from growing. The long term drivers behind rail growth are still present. At worst, Covid has pushed demand back to where it was 10 years ago, assuming there's no further short term bounce back since the end of last year. This gives us a bit of breathing space to plan for future growth. It doesn't mean that future growth won't happen.
Outside the M25, rail use is generally pretty poor. With the right investment in a metro-style regular interval stopping service, rail use in West Yorkshire could increase to London and south-east levels of modal share.
If Covid has permanently stopped rail demand from growing, this should be seen world-wide. Yet we see most other countries continuing with their rail investment plans. In Britain we seem to have this weird attitude to rail investment where we will only make an investment if we've already max out existing capacity and there's no other choice. Other countries plan for the future. We sit there hoping that we won't have to do anything until it's too late.