Speaking of Czech major private train operators, the other one is doing quite well on the Awaken Polish Regulators 100% speedrun - this time, they got sued by the (seriously under-resourced) National Labor Inspection over unpaid wages and social security payments: https://www.rynek-kolejowy.pl/wiadomosci/regiojet-z-problemami-panstwowa-inspekcja-pracy-zlozyla-zawiadomienie-154626.html
It also took Rynek Kolejowy about a month to notice they fixed passenger information problems regarding their Warsaw-Prague train that they reported on earlier: https://www.rynek-kolejowy.pl/wiadomosci/regiojet-poprawia-bledy-w-polskiej-informacji-pasazerskiej--154634.html
(See this little subthread under one of my previous threads: https://101010.pl/@grzeeesiek/117208852090196411 (in Polish))