I've read various accounts of people trying to reclaim lost baggage and it's a Kafkaesque process designed to be totally useless
But the railway operators are 50% nationalised now. Northern, TransPennine, South West Railway, LNER, Greater Anglia, c2c, ScotRail, Southeastern, TfW are all government owned.
And the forerunner in increasing fares the last couple of years has been...the government. They renationalised various operators during and after COVID and are now busy decreasing rail subsidies and increasing fares.
(yes even with the freezing of some fares in April. It's only some fares. And prices had been going up multiple times a year in many places for a few years. There is a wider picture and other schemes happening pushing up prices)
Maybe Great British Rail will slowly and surely return us to a less mean system. Time will tell