Earlier quoted context omitted.
This is incorrect. The biggest accidents - Potters Bar, Hatfield, Southall - happened in the years immediately after privatisation, before passenger numbers had grown much. The problem was more that - in typical privatised fashion - the industry was treated as a cash grab, and property speculation and other side quests got more management attention than running a safe railway. That first incarnation was so bad it was…
I'm in the UK and services seem worse to me. I also remember pre-privatization British Rail. It was unbelievably awful. The basic fact about rail privatization is captured in this chart. All else is commentary: https://en.wikipedia.org/wiki/Impact_of_the_privatisation_of...
Or maybe, just maybe, there's another underlying casual relationship that explains why train use increased a ton in the 90s and 00s in both countries (and other European countries too, by the way, AFAIK passengers count also increased in Germany in that period). Who knows.