There are far more realistic car alternatives in Manchester, Leeds, Liverpool, Newcastle etc, on the XC routes - as well as air options on longer XC routes.
When SWR goes down, or makes drastic reductions to timetable, what are London commuters to do? (Answer - wfh, again). Before this year, my record longest commute home to zone 6 was 2h30, a suicide at Wimbledon in October 2005. That record has been broken three times in 2024 (January, May and August), and I have only been going in three times a week and have just had two months off for a hip replacement. They couldn't run a whelk stall.
I saw on BBC last week that TPE/Northern (can't recall which) is now reinstating services it removed a year ago. SWR land has had reduced services for almost five years now. It's incredible to think SWT ran it so relatively smoothly and made a shed load of cash for the DfT - something like £250m a year on £1bn turnover.