I presume that this proposed reorganisation, with direct state control of what passenger rail services are run and ticket prices, has only been possible as the UK is no longer a member of the EU, given their policy on rail competition.
I don't think that's true at all.
There's nothing in the White Paper that couldn't have been done within the EU.
There will still be some distinction between wheel and rail, even it only in accounting terms (which was all the EU required).
DB, SNCF and the rest are all integrated businesses but with separate infrastructure and operator arms.
Ticketing arrangements were never an EU matter.
If anything it takes us closer to the typical EU model, with concessions rather than franchises.
Concessions will be competed for, as before.
But directly-run operations, like OLR's Northern and LNER currently, are obviously not a permanent plan.
OLR will still exist for "rogue" or failing concessions.